diff --git a/application/config/routes.php b/application/config/routes.php
index 798d29ad0..63ac3119c 100644
--- a/application/config/routes.php
+++ b/application/config/routes.php
@@ -63,6 +63,53 @@ $route['api/v1/system/[S|s]prache/(:any)'] = 'api/v1/system/sprache2/$1';
 
 $route['Cis/LvPlan/.*'] = 'Cis/LvPlan/index/$1';
 
+// Studierendenverwaltung List Routes
+$route['api/frontend/v1/stv/[sS]tudents/inout'] = 'api/frontend/v1/stv/Students/index';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})'] = 'api/frontend/v1/stv/Students/index';
+
+// (studiensemester_kurzbz)/inout[/(incoming|outgoing|gemeinsamestudien)]
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/inout'] = 'api/frontend/v1/stv/Students/index';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/inout/incoming'] = 'api/frontend/v1/stv/Students/getIncoming';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/inout/outgoing'] = 'api/frontend/v1/stv/Students/getOutgoing';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/inout/gemeinsamestudien'] = 'api/frontend/v1/stv/Students/getGemeinsamestudien';
+
+// (studiengang_kz)/prestudent[/(studiensemester_kurzbz)[/(filter)[/(otherfilter)]]]
+$route['api/frontend/v1/stv/[sS]tudents/(:num)/prestudent'] = 'api/frontend/v1/stv/Students/getPrestudents/$1';
+$route['api/frontend/v1/stv/[sS]tudents/(:num)/prestudent/([WS]S[0-9]{4})'] = 'api/frontend/v1/stv/Students/getPrestudents/$1/$2';
+$route['api/frontend/v1/stv/[sS]tudents/(:num)/prestudent/([WS]S[0-9]{4})/(:any)'] = 'api/frontend/v1/stv/Students/getPrestudents/$1/$2/$3';
+$route['api/frontend/v1/stv/[sS]tudents/(:num)/prestudent/([WS]S[0-9]{4})/(:any)/(:any)'] = 'api/frontend/v1/stv/Students/getPrestudents/$1/$2/$4';
+
+// (studiengang_kz)/(orgform)/prestudent[/(studiensemester_kurzbz)[/(filter)[/(otherfilter)]]]
+$route['api/frontend/v1/stv/[sS]tudents/(:num)/([A-Z]{2,3})/prestudent'] = 'api/frontend/v1/stv/Students/getPrestudentsOrgform/$1/$2';
+$route['api/frontend/v1/stv/[sS]tudents/(:num)/([A-Z]{2,3})/prestudent/([WS]S[0-9]{4})'] = 'api/frontend/v1/stv/Students/getPrestudentsOrgform/$1/$2/$3';
+$route['api/frontend/v1/stv/[sS]tudents/(:num)/([A-Z]{2,3})/prestudent/([WS]S[0-9]{4})/(:any)'] = 'api/frontend/v1/stv/Students/getPrestudentsOrgform/$1/$2/$3/$4';
+$route['api/frontend/v1/stv/[sS]tudents/(:num)/([A-Z]{2,3})/prestudent/([WS]S[0-9]{4})/(:any)/(:any)'] = 'api/frontend/v1/stv/Students/getPrestudentsOrgform/$1/$2/$3/$5';
+
+// (studiensemester_kurzbz)/(studiengang_kz)/(semester)/grp/(gruppe)
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)/(:num)/grp/(:any)'] = 'api/frontend/v1/stv/Students/getStudentsSpezialgruppe/$1/$2/$3/$4';
+
+// (studiensemester_kurzbz)/(studiengang_kz)[/(semester)[/(verband)[/(gruppe)]]]
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)'] = 'api/frontend/v1/stv/Students/getStudents/$1/$2';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)/(:num)'] = 'api/frontend/v1/stv/Students/getStudents/$1/$2/$3';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)/(:num)/(:any)'] = 'api/frontend/v1/stv/Students/getStudents/$1/$2/$3/$4';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)/(:num)/(:any)/(:any)'] = 'api/frontend/v1/stv/Students/getStudents/$1/$2/$3/$4/$5';
+
+// (studiensemester_kurzbz)/(studiengang_kz)/(orgform)/(semester)/grp/(gruppe)
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)/([A-Z]{2,3})/(:num)/grp/(:any)'] = 'api/frontend/v1/stv/Students/getStudentsOrgformSpezialgruppe/$1/$2/$3/$4/$5';
+
+// (studiensemester_kurzbz)/(studiengang_kz)/(orgform)[/(semester)[/(verband)[/(gruppe)]]]
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)/([A-Z]{2,3})'] = 'api/frontend/v1/stv/Students/getStudentsOrgform/$1/$2/$3';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)/([A-Z]{2,3})/(:num)'] = 'api/frontend/v1/stv/Students/getStudentsOrgform/$1/$2/$3/$4';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)/([A-Z]{2,3})/(:num)/(:any)'] = 'api/frontend/v1/stv/Students/getStudentsOrgform/$1/$2/$3/$4/$5';
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/(:num)/([A-Z]{2,3})/(:num)/(:any)/(:any)'] = 'api/frontend/v1/stv/Students/getStudentsOrgform/$1/$2/$3/$4/$5/$6';
+
+// // (studiensemester_kurzbz)/uid/(uid)
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/uid/(:any)'] = 'api/frontend/v1/stv/Students/getStudent/$1/$2';
+// // (studiensemester_kurzbz)/prestudent/(prestudent_id)
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/prestudent/(:num)'] = 'api/frontend/v1/stv/Students/getPrestudent/$1/$2';
+// // (studiensemester_kurzbz)/person/(person_id)
+$route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/person/(:num)'] = 'api/frontend/v1/stv/Students/getPerson/$1/$2';
+
 // load routes from extensions
 $subdir = 'application/config/extensions';
 $dirlist = scandir($subdir);
diff --git a/application/config/stv.php b/application/config/stv.php
index 1fdd5b28a..aa885c9e1 100644
--- a/application/config/stv.php
+++ b/application/config/stv.php
@@ -1,5 +1,6 @@
 <?php
 
+$config['number_displayed_past_studiensemester_default'] = 5;
 $config['tabs'] =
 	[
 		'details' => [
diff --git a/application/controllers/api/frontend/v1/stv/Grades.php b/application/controllers/api/frontend/v1/stv/Grades.php
index 61d797495..dd8f53a27 100644
--- a/application/controllers/api/frontend/v1/stv/Grades.php
+++ b/application/controllers/api/frontend/v1/stv/Grades.php
@@ -74,14 +74,15 @@ class Grades extends FHCAPI_Controller
 	 * (Entries in lehre.tbl_zeugnisnote)
 	 *
 	 * @param string				$prestudent_id
-	 * @param string|null			$all (optional) If null only the current semesters grades will be loaded, otherwise all semesters grades will be loaded.
+	 * @param string|null			$studiensemester_kurzbz If studiensemester_kurzbz only this semesters grades will be loaded, otherwise all semesters grades will be loaded.
 	 *
 	 * @return void
 	 */
-	public function getCertificate($prestudent_id, $all = null)
+	public function getCertificate($prestudent_id, $studiensemester_kurzbz = null)
 	{
 		$this->load->model('crm/Student_model', 'StudentModel');
 		$this->load->model('education/Zeugnisnote_model', 'ZeugnisnoteModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
 
 		$result = $this->StudentModel->loadWhere([
 			'prestudent_id' => $prestudent_id
@@ -91,12 +92,13 @@ class Grades extends FHCAPI_Controller
 		if (!$student)
 			$this->terminateWithSuccess([]);
 		
-		
 		$student_uid = current($student)->student_uid;
 
-		$studiensemester_kurzbz = ($all === null) ? $this->variablelib->getVar('semester_aktuell') : null;
+		if ($studiensemester_kurzbz !== null && !$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
 
-		
 		$result = $this->ZeugnisnoteModel->getZeugnisnoten($student_uid, $studiensemester_kurzbz);
 
 		$grades = $this->getDataOrTerminateWithError($result);
@@ -109,14 +111,15 @@ class Grades extends FHCAPI_Controller
 	 * (Entries in campus.tbl_lvgesamtnote)
 	 *
 	 * @param string				$prestudent_id
-	 * @param string|null			$all (optional) If null only the current semesters grades will be loaded, otherwise all semesters grades will be loaded.
+	 * @param string|null			$studiensemester_kurzbz If studiensemester_kurzbz only this semesters grades will be loaded, otherwise all semesters grades will be loaded.
 	 *
 	 * @return void
 	 */
-	public function getTeacherProposal($prestudent_id, $all = null)
+	public function getTeacherProposal($prestudent_id, $studiensemester_kurzbz = null)
 	{
 		$this->load->model('crm/Student_model', 'StudentModel');
 		$this->load->model('education/Lvgesamtnote_model', 'LvgesamtnoteModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
 
 		$result = $this->StudentModel->loadWhere([
 			'prestudent_id' => $prestudent_id
@@ -129,9 +132,11 @@ class Grades extends FHCAPI_Controller
 		
 		$student_uid = current($student)->student_uid;
 
-		$studiensemester_kurzbz = ($all === null) ? $this->variablelib->getVar('semester_aktuell') : null;
+		if ($studiensemester_kurzbz !== null && !$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
 
-		
 		$result = $this->LvgesamtnoteModel->getLvGesamtNoten(null, $student_uid, $studiensemester_kurzbz);
 
 		$grades = $this->getDataOrTerminateWithError($result);
@@ -144,17 +149,20 @@ class Grades extends FHCAPI_Controller
 	 * or as not allowed because of the repeating of a semester.
 	 *
 	 * @param string				$prestudent_id
-	 * @param string|null			$all (optional) If null only the current semesters grades will be loaded, otherwise all semesters grades will be loaded.
+	 * @param string|false			$studiensemester_kurzbz If studiensemester_kurzbz only this semesters grades will be loaded, otherwise all semesters grades will be loaded.
 	 *
 	 * @return void
 	 */
-	public function getRepeaterGrades($prestudent_id, $all = null)
+	public function getRepeaterGrades($prestudent_id, $studiensemester_kurzbz = false)
 	{
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
 		$this->load->library('AntragLib');
 
-		$studiensemester_kurzbz = ($all === null) ? $this->variablelib->getVar('semester_aktuell') : false;
+		if ($studiensemester_kurzbz !== false && !$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
 
-		
 		$result = $this->antraglib->getLvsForPrestudent($prestudent_id, $studiensemester_kurzbz);
 
 		$grades = $this->getDataOrTerminateWithError($result);
@@ -456,13 +464,19 @@ class Grades extends FHCAPI_Controller
 	
 		$this->form_validation->set_rules("lehrveranstaltung_id", $this->p->t('lehre', 'lehrveranstaltung'), "required|integer");
 		$this->form_validation->set_rules("points", $this->p->t("stv", "grades_points"), "required|numeric");
+		$this->form_validation->set_rules("studiensemester_kurzbz", $this->p->t("lehre", "studiensemester"), "required|regex_match[/^[WS]S[0-9]{4}$/]");
 
 		if (!$this->form_validation->run())
 			$this->terminateWithValidationErrors($this->form_validation->error_array());
-		
-		$this->load->model('education/Notenschluesselaufteilung_model', 'NotenschluesselaufteilungModel');
 
-		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+		$studiensemester_kurzbz = $this->input->post('studiensemester_kurzbz');
+		if (!$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
+
+		$this->load->model('education/Notenschluesselaufteilung_model', 'NotenschluesselaufteilungModel');
 		
 		$result = $this->NotenschluesselaufteilungModel->getNote(
 			$this->input->post('points'),
diff --git a/application/controllers/api/frontend/v1/stv/Status.php b/application/controllers/api/frontend/v1/stv/Status.php
index fcc8007cd..629d5512a 100644
--- a/application/controllers/api/frontend/v1/stv/Status.php
+++ b/application/controllers/api/frontend/v1/stv/Status.php
@@ -30,6 +30,7 @@ class Status extends FHCAPI_Controller
 		//Load Models
 		$this->load->model('crm/Prestudentstatus_model', 'PrestudentstatusModel');
 		$this->load->model('person/Person_model', 'PersonModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
 
 		// Load Libraries
 		$this->load->library('VariableLib', ['uid' => getAuthUID()]);
@@ -189,9 +190,13 @@ class Status extends FHCAPI_Controller
 		$studiensemester_kurzbz = $lastStatusData->studiensemester_kurzbz;
 		if ($status_kurzbz == Prestudentstatus_model::STATUS_ABSOLVENT
 			|| $status_kurzbz == Prestudentstatus_model::STATUS_DIPLOMAND
-		) {
-			$this->load->library('VariableLib', ['uid' => getAuthUID()]);
-			$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');
+		)
+		{
+			$studiensemester_kurzbz = $this->input->post('currentSemester');
+			if (!$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+			{
+				$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+			}
 		}
 
 		$ausbildungssemester = $lastStatusData->ausbildungssemester;
diff --git a/application/controllers/api/frontend/v1/stv/Student.php b/application/controllers/api/frontend/v1/stv/Student.php
index 17cec8b26..2518e9af9 100644
--- a/application/controllers/api/frontend/v1/stv/Student.php
+++ b/application/controllers/api/frontend/v1/stv/Student.php
@@ -68,12 +68,14 @@ class Student extends FHCAPI_Controller
 	 * @param string			$prestudent_id
 	 * @return void
 	 */
-	public function get($prestudent_id)
+	public function get($prestudent_id, $studiensemester_kurzbz)
 	{
-		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');
-
-
 		$this->load->model('crm/Prestudent_model', 'PrestudentModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+		if (!$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
 
 		$this->PrestudentModel->addSelect('p.person_id');
 		$this->PrestudentModel->addSelect('p.titelpre');
@@ -172,7 +174,7 @@ class Student extends FHCAPI_Controller
 	 * @param string			$prestudent_id
 	 * @return void
 	 */
-	public function save($prestudent_id)
+	public function save($prestudent_id, $studiensemester_kurzbz)
 	{
 		$this->load->model('person/Person_model', 'PersonModel');
 		$this->load->model('person/Benutzer_model', 'BenutzerModel');
@@ -180,14 +182,18 @@ class Student extends FHCAPI_Controller
 		$this->load->model('crm/Prestudent_model', 'PrestudentModel');
 		$this->load->model('education/Studentlehrverband_model', 'StudentlehrverbandModel');
 		$this->load->model('organisation/Lehrverband_model', 'LehrverbandModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
 
 		$this->load->library('form_validation');
 
+		if (!$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
+
 		$authuid = getAuthUID();
 		$now = date('c');
 
-		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');
-
 		$this->form_validation->set_rules('gebdatum', 'Geburtsdatum', 'is_valid_date');
 
 		$this->form_validation->set_rules('semester', 'Semester', 'integer', [
diff --git a/application/controllers/api/frontend/v1/stv/Students.php b/application/controllers/api/frontend/v1/stv/Students.php
index df8793368..12785d6d7 100644
--- a/application/controllers/api/frontend/v1/stv/Students.php
+++ b/application/controllers/api/frontend/v1/stv/Students.php
@@ -48,139 +48,108 @@ class Students extends FHCAPI_Controller
 	}
 
 	/**
-	 * Remap calls:
-	 * /													=> return []
-	 * /inout												=> return []
-	 * /inout/incoming										=> getIncoming
-	 * /inout/outgoing										=> getOutgoing
-	 * /inout/gemeinsamestudien								=> getGemeinsamestudien
-	 * /(studiengang_kz)									=> getStudents
-	 * /(studiengang_kz)/prestudent							=> getPrestudents
-	 * /(studiengang_kz)/prestudent/*						=> getPrestudents
-	 * /(studiengang_kz)/(semester)							=> getStudents
-	 * /(studiengang_kz)/(semester)/grp/(gruppe_kurzbz)		=> getStudents
-	 * /(studiengang_kz)/(semester)/(verband)				=> getStudents
-	 * /(studiengang_kz)/(semester)/(verband)/(gruppe)		=> getStudents
-	 * /(studiengang_kz)/(org_form)							=> getStudents
-	 * /(studiengang_kz)/(org_form)/prestudent				=> getPrestudents
-	 * /(studiengang_kz)/(org_form)/prestudent/*			=> getPrestudents
-	 * /(studiengang_kz)/(org_form)/(semester)				=> getStudents
-	 * /(studiengang_kz)/(org_form)/(semester)/grp/(gruppe_kurzbz)
-	 * 														=> getStudents
-	 * /(studiengang_kz)/(org_form)/(semester)/(verband)	=> getStudents
-	 * /(studiengang_kz)/(org_form)/(semester)/(verband)/(gruppe)
-	 * 														=> getStudents
-	 * /student/(student_uid)								=> getStudent
-	 * /prestudent/(prestudent_id)							=> getPrestudent
-	 * /person/(person_id)									=> getPerson
+	 * Routing
 	 *
-	 * @param string		$method
-	 * @param array			$params				(optional)
+	 * /inout												=> index
+	 * /(studiensemester_kurzbz)							=> index
+	 * /(studiensemester_kurzbz)/inout						=> index
 	 *
+	 * /(studiensemester_kurzbz)/inout/incoming				=> getIncoming
+	 * /(studiensemester_kurzbz)/inout/outgoing				=> getOutgoing
+	 * /(studiensemester_kurzbz)/inout/gemeinsamestudien	=> getGemeinsamestudien
+	 *
+	 * /(studiengang_kz)/prestudent													=> getPrestudents
+	 * /(studiengang_kz)/prestudent/(studiensemester_kurzbz)						=> getPrestudents
+	 * /(studiengang_kz)/prestudent/(studiensemester_kurzbz)/(filter)				=> getPrestudents
+	 * /(studiengang_kz)/prestudent/(studiensemester_kurzbz)/(filter)/(otherfilter)	=> getPrestudents
+	 *
+	 * /(studiengang_kz)/(orgform)/prestudent													=> getPrestudentsOrgform
+	 * /(studiengang_kz)/(orgform)/prestudent/(studiensemester_kurzbz)							=> getPrestudentsOrgform
+	 * /(studiengang_kz)/(orgform)/prestudent/(studiensemester_kurzbz)/(filter)					=> getPrestudentsOrgform
+	 * /(studiengang_kz)/(orgform)/prestudent/(studiensemester_kurzbz)/(filter)/(otherfilter)	=> getPrestudentsOrgform
+	 *
+	 * /(studiensemester_kurzbz)/(studiengang_kz)/(semester)/grp/(gruppe)	=> getStudentsSpezialguppe
+	 *
+	 * /(studiensemester_kurzbz)/(studiengang_kz)								=> getStudents
+	 * /(studiensemester_kurzbz)/(studiengang_kz)/(semester)					=> getStudents
+	 * /(studiensemester_kurzbz)/(studiengang_kz)/(semester)/(verband)			=> getStudents
+	 * /(studiensemester_kurzbz)/(studiengang_kz)/(semester)/(verband)/(gruppe) => getStudents
+	 *
+	 * /(studiensemester_kurzbz)/(studiengang_kz)/(orgform)/(semester)/grp/(gruppe) => getStudentsOrgformSpezialgruppe
+	 *
+	 * /(studiensemester_kurzbz)/(studiengang_kz)/(orgform)									=> getStudentsOrgform
+	 * /(studiensemester_kurzbz)/(studiengang_kz)/(orgform)/(semester)						=> getStudentsOrgform
+	 * /(studiensemester_kurzbz)/(studiengang_kz)/(orgform)/(semester)/(verband)			=> getStudentsOrgform
+	 * /(studiensemester_kurzbz)/(studiengang_kz)/(orgform)/(semester)/(verband)/(gruppe)	=> getStudentsOrgform
+	 *
+	 * /(studiensemester_kurzbz)/uid/(student_uid)		=> getStudent
+	 * /(studiensemester_kurzbz)/prestudent/(prestudent_id)	=> getPrestudent
+	 * /(studiensemester_kurzbz)/person/(person_id)			=> getPerson
+	 */
+
+	public function index()
+	{
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->terminateWithSuccess([]);
+	}
+
+	/**
 	 * @return void
 	 */
-	public function _remap($method, $params = [])
+	public function getIncoming()
 	{
-		if ($method == '' || $method == 'index')
-			return $this->terminateWithSuccess([]);
+		$this->addMeta('ci_method', __FUNCTION__);
+		// TODO(chris): IMPLEMENT!
+		$this->terminateWithSuccess([]);
+	}
 
-		if ($method == 'inout') {
-			if (!count($params))
-				return $this->terminateWithSuccess([]);
-			switch ($params[0]) {
-				case 'incoming':
-					return $this->getIncoming();
-				case 'outgoing':
-					return $this->getOutgoing();
-				case 'gemeinsamestudien':
-					return $this->getGemeinsamestudien();
-				default:
-					return show_404();
-			}
-		}
+	/**
+	 * @return void
+	 */
+	public function getOutgoing()
+	{
+		$this->addMeta('ci_method', __FUNCTION__);
+		// TODO(chris): IMPLEMENT!
+		$this->terminateWithSuccess([]);
+	}
 
-		$count = count($params);
-		if (!$count)
-			return $this->getStudents($method);
+	/**
+	 * @return void
+	 */
+	public function getGemeinsamestudien()
+	{
+		$this->addMeta('ci_method', __FUNCTION__);
+		// TODO(chris): IMPLEMENT!
+		$this->terminateWithSuccess([]);
+	}
 
-		if ($method == 'uid' && $count == 1)
-			return $this->getStudent($params[0]);
-
-		if ($method == 'prestudent' && $count == 1)
-			return $this->getPrestudent($params[0]);
-
-		if ($method == 'person' && $count == 1)
-			return $this->getPerson($params[0]);
-
-		if (is_numeric($params[0])) {
-			$sem = $params[0];
-			if ($count == 3 && $params[1] == 'grp') {
-				$g = $params[2];
-				$ver = null;
-				$grp = null;
-			} else {
-				$g = null;
-				$ver = $count > 1 ? $params[1] : null;
-				$grp = $count > 2 ? $params[2] : null;
-			}
-			return $this->getStudents($method, $sem, $ver, $grp, $g);
-		} elseif ($params[0] == 'prestudent') {
-			if ($count == 1)
-				return $this->getPrestudents($method);
-			if ($count == 2)
-				return $this->getPrestudents($method, $params[1]);
-			return $this->getPrestudents($method, $params[1], $params[$count-1]);
-		} else {
-			$org = $params[0];
-			if ($count > 1 && $params[1] == 'prestudent') {
-				if ($count == 2)
-					return $this->getPrestudents($method, null, null, $org);
-				if ($count == 3)
-					return $this->getPrestudents($method, $params[2], null, $org);
-				return $this->getPrestudents($method, $params[2], $params[$count-1], $org);
-			}
-			$sem = $count > 1 ? $params[1] : null;
-			if ($count == 4 && $params[2] == 'grp') {
-				$g = $params[3];
-				$ver = null;
-				$grp = null;
-			} else {
-				$g = null;
-				$ver = $count > 2 ? $params[2] : null;
-				$grp = $count > 3 ? $params[3] : null;
-			}
-
-			return $this->getStudents($method, $sem, $ver, $grp, $g, $org);
-		}
+	public function getPrestudents($studiengang_kz,
+		$studiensemester_kurzbz = null, $filter = null
+	)
+	{
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->addMeta('ci_params', array(
+			'studiengang_kz' => $studiengang_kz,
+			'studiensemester_kurzbz' => $studiensemester_kurzbz,
+			'filter' => $filter
+		));
 		
-		show_404();
+		$this->fetchPrestudents($studiengang_kz, $studiensemester_kurzbz, $filter);
 	}
 
-	/**
-	 * @return void
-	 */
-	protected function getIncoming()
+	public function getPrestudentsOrgform($studiengang_kz, $orgform_kurzbz,
+		$studiensemester_kurzbz = null, $filter = null
+	)
 	{
-		// TODO(chris): IMPLEMENT!
-		$this->terminateWithSuccess([]);
-	}
-
-	/**
-	 * @return void
-	 */
-	protected function getOutgoing()
-	{
-		// TODO(chris): IMPLEMENT!
-		$this->terminateWithSuccess([]);
-	}
-
-	/**
-	 * @return void
-	 */
-	protected function getGemeinsamestudien()
-	{
-		// TODO(chris): IMPLEMENT!
-		$this->terminateWithSuccess([]);
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->addMeta('ci_params', array(
+			'studiengang_kz' => $studiengang_kz,
+			'studiensemester_kurzbz' => $studiensemester_kurzbz,
+			'filter' => $filter,
+			'orgform_kurzbz' => $orgform_kurzbz
+		));
+		
+		$this->fetchPrestudents($studiengang_kz, $studiensemester_kurzbz, $filter, $orgform_kurzbz);
 	}
 
 	/**
@@ -191,7 +160,7 @@ class Students extends FHCAPI_Controller
 	 *
 	 * @return void
 	 */
-	protected function getPrestudents($studiengang_kz, $studiensemester_kurzbz = null, $filter = null, $orgform_kurzbz = null)
+	protected function fetchPrestudents($studiengang_kz, $studiensemester_kurzbz = null, $filter = null, $orgform_kurzbz = null)
 	{
 		$this->load->model('crm/Prestudent_model', 'PrestudentModel');
 
@@ -379,8 +348,73 @@ class Students extends FHCAPI_Controller
 		$this->terminateWithSuccess($data);
 	}
 
+	public function getStudents($studiensemester_kurzbz,
+		$studiengang_kz, $semester = null, $verband = null, $gruppe = null
+	)
+	{
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->addMeta('ci_params', array(
+			'studiensemester_kurzbz' => $studiensemester_kurzbz,
+			'studiengang_kz' => $studiengang_kz,
+			'semester' => $semester,
+			'verband' => $verband,
+			'gruppe' => $gruppe
+		));
+		
+		$this->fetchStudents($studiensemester_kurzbz, $studiengang_kz, $semester, $verband, $gruppe, null, null);
+	}
+
+	public function getStudentsOrgform($studiensemester_kurzbz,
+		$studiengang_kz, $orgform_kurzbz, $semester = null, $verband = null, $gruppe = null
+	)
+	{
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->addMeta('ci_params', array(
+			'studiensemester_kurzbz' => $studiensemester_kurzbz,
+			'studiengang_kz' => $studiengang_kz,
+			'orgform_kurzbz' => $orgform_kurzbz,
+			'semester' => $semester,
+			'verband' => $verband,
+			'gruppe' => $gruppe
+		));
+		
+		$this->fetchStudents($studiensemester_kurzbz, $studiengang_kz, $semester, $verband, $gruppe, null, $orgform_kurzbz);
+	}
+
+	public function getStudentsSpezialgruppe($studiensemester_kurzbz,
+		$studiengang_kz, $semester, $gruppe_kurzbz,
+		$orgform_kurzbz = null)
+	{
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->addMeta('ci_params', array(
+			'studiensemester_kurzbz' => $studiensemester_kurzbz,
+			'studiengang_kz' => $studiengang_kz,
+			'semester' => $semester,
+			'gruppe_kurzbz' => $gruppe_kurzbz
+		));
+		
+		$this->fetchStudents($studiensemester_kurzbz, $studiengang_kz, $semester, null, null, $gruppe_kurzbz, null);
+	}
+
+	public function getStudentsOrgformSpezialgruppe($studiensemester_kurzbz,
+		$orgform_kurzbz, $studiengang_kz, $semester, $gruppe_kurzbz
+	)
+	{
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->addMeta('ci_params', array(
+			'studiensemester_kurzbz' => $studiensemester_kurzbz,
+			'orgform_kurzbz' => $orgform_kurzbz,
+			'studiengang_kz' => $studiengang_kz,
+			'semester' => $semester,
+			'gruppe_kurzbz' => $gruppe_kurzbz
+		));
+		
+		$this->fetchStudents($studiensemester_kurzbz, $studiengang_kz, $semester, null, null, $gruppe_kurzbz, $orgform_kurzbz);
+	}
+
 	/**
 	 * @param integer		$studiengang_kz
+	 * @param string		$studiensemester_kurzbz
 	 * @param integer		$semester						(optional)
 	 * @param string		$verband						(optional)
 	 * @param integer		$gruppe							(optional)
@@ -389,11 +423,15 @@ class Students extends FHCAPI_Controller
 	 *
 	 * @return void
 	 */
-	protected function getStudents($studiengang_kz, $semester = null, $verband = null, $gruppe = null, $gruppe_kurzbz = null, $orgform_kurzbz = null)
+	protected function fetchStudents($studiensemester_kurzbz, $studiengang_kz, $semester = null, $verband = null, $gruppe = null, $gruppe_kurzbz = null, $orgform_kurzbz = null)
 	{
-		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');
-
 		$this->load->model('crm/Prestudent_model', 'PrestudentModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+
+		if (!$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
 
 		/*
 			$this->PrestudentModel->addJoin('public.tbl_studiengang stg', 'studiengang_kz', 'LEFT');
@@ -478,9 +516,20 @@ class Students extends FHCAPI_Controller
 	 *
 	 * @return void
 	 */
-	protected function getPrestudent($prestudent_id)
+	public function getPrestudent($studiensemester_kurzbz, $prestudent_id)
 	{
-		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->addMeta('ci_params', array(
+			'studiensemester_kurzbz' => $studiensemester_kurzbz,
+			'prestudent_id' => $prestudent_id,
+		));
+
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+
+		if (!$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
 
 		$this->load->model('crm/Prestudent_model', 'PrestudentModel');
 
@@ -536,9 +585,20 @@ class Students extends FHCAPI_Controller
 	 *
 	 * @return void
 	 */
-	protected function getStudent($student_uid)
+	public function getStudent($studiensemester_kurzbz, $student_uid)
 	{
-		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->addMeta('ci_params', array(
+			'studiensemester_kurzbz' => $studiensemester_kurzbz,
+			'student_uid' => $student_uid,
+		));
+
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+
+		if (!$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
 
 		$this->load->model('crm/Prestudent_model', 'PrestudentModel');
 
@@ -592,13 +652,25 @@ class Students extends FHCAPI_Controller
 	}
 
 	/**
+	 * @param string		$studiensemester_kurzbz
 	 * @param integer		$person_id
 	 *
 	 * @return void
 	 */
-	protected function getPerson($person_id)
+	public function getPerson($studiensemester_kurzbz, $person_id)
 	{
-		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');
+		$this->addMeta('ci_method', __FUNCTION__);
+		$this->addMeta('ci_params', array(
+			'studiensemester_kurzbz' => $studiensemester_kurzbz,
+			'person_id' => $person_id,
+		));
+
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+
+		if (!$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
 
 		$this->load->model('crm/Prestudent_model', 'PrestudentModel');
 
diff --git a/application/controllers/api/frontend/v1/stv/Verband.php b/application/controllers/api/frontend/v1/stv/Verband.php
index e8c532652..4060704de 100644
--- a/application/controllers/api/frontend/v1/stv/Verband.php
+++ b/application/controllers/api/frontend/v1/stv/Verband.php
@@ -355,7 +355,11 @@ class Verband extends FHCAPI_Controller
 		$this->load->model('system/Variable_model', 'VariableModel');
 		$result = $this->VariableModel->getVariables(getAuthUID(), ['number_displayed_past_studiensemester']);
 		$data = $this->getDataOrTerminateWithError($result);
-		$number_displayed_past_studiensemester = $data['number_displayed_past_studiensemester'] ?? null;
+
+		$this->load->config('stv');
+		$number_displayed_past_studiensemester_default = $this->config->item('number_displayed_past_studiensemester_default');
+
+		$number_displayed_past_studiensemester = $data['number_displayed_past_studiensemester'] ?? $number_displayed_past_studiensemester_default;
 
 		$this->StudiensemesterModel->addPlusMinus(null, $number_displayed_past_studiensemester);
 		$this->StudiensemesterModel->addOrder('ende');
diff --git a/application/libraries/PrestudentLib.php b/application/libraries/PrestudentLib.php
index ef5e2e3a9..2d795369f 100644
--- a/application/libraries/PrestudentLib.php
+++ b/application/libraries/PrestudentLib.php
@@ -500,11 +500,6 @@ class PrestudentLib
 
 		$student = current(getData($result));
 
-
-		$this->_ci->load->library('VariableLib', ['uid' => $authUID]);
-		$semester_aktuell = $this->_ci->variablelib->getVar('semester_aktuell');
-
-
 		// Update Aktionen
 
 		// Status updaten
@@ -545,8 +540,8 @@ class PrestudentLib
 		// Studentlehrverband updaten
 		$result = $this->_ci->StudentlehrverbandModel->update([
 			'student_uid' => $student->student_uid,
-			'studiensemester_kurzbz' => $semester_aktuell
-		], [
+			'studiensemester_kurzbz' => $studiensemester_kurzbz
+			], [
 			'semester' => $ausbildungssemester,
 			'verband' => '',
 			'gruppe' => '',
diff --git a/application/models/organisation/Studiensemester_model.php b/application/models/organisation/Studiensemester_model.php
index f29ab223c..5fa6ffb14 100644
--- a/application/models/organisation/Studiensemester_model.php
+++ b/application/models/organisation/Studiensemester_model.php
@@ -341,4 +341,10 @@ class Studiensemester_model extends DB_Model
 		WHERE studiensemester_kurzbz = ?",[$studiensemester_kurzbz]);
 
 	}
+
+	public function isValidStudiensemester($studiensemester_kurzbz)
+	{
+		$result = $this->load($studiensemester_kurzbz);
+		return hasData($result);
+	}
 }
diff --git a/public/js/api/factory/stv/details.js b/public/js/api/factory/stv/details.js
index 282b0003e..1077de22d 100644
--- a/public/js/api/factory/stv/details.js
+++ b/public/js/api/factory/stv/details.js
@@ -16,16 +16,22 @@
  */
 
 export default {
-	get(prestudent_id) {
+	get(prestudent_id, studiensemester_kurzbz) {
 		return {
 			method: 'post',
-			url: 'api/frontend/v1/stv/student/get/' + prestudent_id
+			url: 'api/frontend/v1/stv/student/get/'
+				+ encodeURIComponent(prestudent_id)
+				+ '/'
+				+ encodeURIComponent(studiensemester_kurzbz)
 		};
 	},
-	save(prestudent_id, params) {
+	save(prestudent_id, studiensemester_kurzbz, params) {
 		return {
 			method: 'post',
-			url: 'api/frontend/v1/stv/student/save/' + prestudent_id,
+			url: 'api/frontend/v1/stv/student/save/'
+				+ encodeURIComponent(prestudent_id)
+				+ '/'
+				+ encodeURIComponent(studiensemester_kurzbz),
 			params
 		};
 	},
diff --git a/public/js/api/factory/stv/grades.js b/public/js/api/factory/stv/grades.js
index ea0d025eb..c42d202e3 100644
--- a/public/js/api/factory/stv/grades.js
+++ b/public/js/api/factory/stv/grades.js
@@ -22,25 +22,34 @@ export default {
 			url: 'api/frontend/v1/stv/grades/list'
 		};
 	},
-	getCertificate(prestudent_id, all) {
-		all = all ? '/all' : '';
+	getCertificate(prestudent_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/grades/getCertificate/' + encodeURIComponent(prestudent_id);
+		if (!!studiensemester_kurzbz) {
+			url = url + '/' + encodeURIComponent(studiensemester_kurzbz);
+		}
 		return {
 			method: 'get',
-			url: 'api/frontend/v1/stv/grades/getCertificate/' + prestudent_id + all
+			url: url
 		};
 	},
-	getTeacherProposal(prestudent_id, all) {
-		all = all ? '/all' : '';
+	getTeacherProposal(prestudent_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/grades/getTeacherProposal/' + encodeURIComponent(prestudent_id);
+		if (!!studiensemester_kurzbz) {
+			url = url + '/' + encodeURIComponent(studiensemester_kurzbz);
+		}
 		return {
 			method: 'get',
-			url: 'api/frontend/v1/stv/grades/getTeacherProposal/' + prestudent_id + all
+			url: url
 		};
 	},
-	getRepeaterGrades(prestudent_id, all) {
-		all = all ? '/all' : '';
+	getRepeaterGrades(prestudent_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/grades/getRepeaterGrades/' + encodeURIComponent(prestudent_id);
+		if (!!studiensemester_kurzbz) {
+			url = url + '/' + encodeURIComponent(studiensemester_kurzbz);
+		}
 		return {
 			method: 'get',
-			url: 'api/frontend/v1/stv/grades/getRepeaterGrades/' + prestudent_id + all
+			url: url
 		};
 	},
 	updateCertificate({lehrveranstaltung_id, student_uid, studiensemester_kurzbz, note, lehrveranstaltung_bezeichnung}) {
@@ -86,11 +95,15 @@ export default {
 			}
 		};
 	},
-	getGradeFromPoints(points, lehrveranstaltung_id) {
+	getGradeFromPoints(points, lehrveranstaltung_id, studiensemester_kurzbz) {
 		return {
 			method: 'post',
 			url: 'api/frontend/v1/stv/grades/getGradeFromPoints',
-			params: { points, lehrveranstaltung_id }
+			params: {
+				"points": points,
+				"lehrveranstaltung_id": lehrveranstaltung_id,
+				"studiensemester_kurzbz": studiensemester_kurzbz
+			}
 		};
 	}
 };
\ No newline at end of file
diff --git a/public/js/api/factory/stv/prestudent.js b/public/js/api/factory/stv/prestudent.js
index a49dd1d7a..0112ff49b 100644
--- a/public/js/api/factory/stv/prestudent.js
+++ b/public/js/api/factory/stv/prestudent.js
@@ -17,10 +17,13 @@
 
 export default {
 	//------------- Prestudent.js------------------------------------------------------
-	get(prestudent_id) {
+	get(prestudent_id, studiensemester_kurzbz) {
 		return {
 			method: 'post',
-			url: 'api/frontend/v1/stv/prestudent/get/' + prestudent_id
+			url: 'api/frontend/v1/stv/prestudent/get/'
+				+ encodeURIComponent(prestudent_id)
+				+ '/'
+				+ encodeURIComponent(studiensemester_kurzbz)
 		};
 	},
 	updatePrestudent(prestudent_id, params) {
diff --git a/public/js/api/factory/stv/students.js b/public/js/api/factory/stv/students.js
index 582ba04e8..18f3b1743 100644
--- a/public/js/api/factory/stv/students.js
+++ b/public/js/api/factory/stv/students.js
@@ -16,22 +16,34 @@
  */
 
 export default {
-	uid(uid) {
+	uid(uid, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/students/'
+			+ encodeURIComponent(studiensemester_kurzbz)
+			+ '/uid/'
+			+ encodeURIComponent(uid);
 		return {
 			method: 'get',
-			url: 'api/frontend/v1/stv/students/uid/' + uid
+			url: url
 		};
 	},
-	prestudent(prestudent_id) {
+	prestudent(prestudent_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/students/'
+			+ encodeURIComponent(studiensemester_kurzbz)
+			+ '/prestudent/'
+			+ encodeURIComponent(prestudent_id);
 		return {
 			method: 'get',
-			url: 'api/frontend/v1/stv/students/prestudent/' + prestudent_id
+			url: url
 		};
 	},
-	person(person_id) {
+	person(person_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/students/'
+			+ encodeURIComponent(studiensemester_kurzbz)
+			+ '/person/'
+			+ encodeURIComponent(person_id);
 		return {
 			method: 'get',
-			url: 'api/frontend/v1/stv/students/person/' + person_id
+			url: url
 		};
 	},
 	verband(relative_path) {
diff --git a/public/js/api/stv/details.js b/public/js/api/stv/details.js
index a56de9494..501204c08 100644
--- a/public/js/api/stv/details.js
+++ b/public/js/api/stv/details.js
@@ -1,10 +1,16 @@
 export default {
-	get(prestudent_id) {
-		return this.$fhcApi.post('api/frontend/v1/stv/student/get/' + prestudent_id);
+	get(prestudent_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/student/get/'
+			+ encodeURIComponent(prestudent_id)
+			+ '/'
+			+ encodeURIComponent(studiensemester_kurzbz);
+		return this.$fhcApi.post(url);
 	},
-	save(form, prestudent_id, data) {
-		return this.$fhcApi.post(form, 'api/frontend/v1/stv/student/save/' + prestudent_id,
-			data
-		);
+	save(form, prestudent_id, studiensemester_kurzbz, data) {
+		let url = 'api/frontend/v1/stv/student/save/'
+			+ encodeURIComponent(prestudent_id)
+			+ '/'
+			+ encodeURIComponent(studiensemester_kurzbz);
+		return this.$fhcApi.post(form, url, data);
 	},
 }
diff --git a/public/js/api/stv/grades.js b/public/js/api/stv/grades.js
index 135cd836c..625c3f8e3 100644
--- a/public/js/api/stv/grades.js
+++ b/public/js/api/stv/grades.js
@@ -2,17 +2,26 @@ export default {
 	list() {
 		return this.$fhcApi.get('api/frontend/v1/stv/grades/list');
 	},
-	getCertificate(prestudent_id, all) {
-		all = all ? '/all' : '';
-		return this.$fhcApi.get('api/frontend/v1/stv/grades/getCertificate/' + prestudent_id + all);
+	getCertificate(prestudent_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/grades/getCertificate/' + encodeURIComponent(prestudent_id);
+		if (!!studiensemester_kurzbz) {
+			url = url + '/' + encodeURIComponent(studiensemester_kurzbz);
+		}
+		return this.$fhcApi.get(url);
 	},
-	getTeacherProposal(prestudent_id, all) {
-		all = all ? '/all' : '';
-		return this.$fhcApi.get('api/frontend/v1/stv/grades/getTeacherProposal/' + prestudent_id + all);
+	getTeacherProposal(prestudent_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/grades/getTeacherProposal/' + encodeURIComponent(prestudent_id);
+		if (!!studiensemester_kurzbz) {
+			url = url + '/' + encodeURIComponent(studiensemester_kurzbz);
+		}
+		return this.$fhcApi.get(url);
 	},
-	getRepeaterGrades(prestudent_id, all) {
-		all = all ? '/all' : '';
-		return this.$fhcApi.get('api/frontend/v1/stv/grades/getRepeaterGrades/' + prestudent_id + all);
+	getRepeaterGrades(prestudent_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/grades/getRepeaterGrades/' + encodeURIComponent(prestudent_id);
+		if (!!studiensemester_kurzbz) {
+			url = url + '/' + encodeURIComponent(studiensemester_kurzbz);
+		}
+		return this.$fhcApi.get(url);
 	},
 	updateCertificate({lehrveranstaltung_id, student_uid, studiensemester_kurzbz, note, lehrveranstaltung_bezeichnung}) {
 		return this.$fhcApi.post(
@@ -65,8 +74,15 @@ export default {
 			}
 		);
 	},
-	getGradeFromPoints(points, lehrveranstaltung_id, manualErrorHandling) {
+	getGradeFromPoints(points, lehrveranstaltung_id, studiensemester_kurzbz, manualErrorHandling) {
 		const config = manualErrorHandling ? {errorHandling: false} : {};
-		return this.$fhcApi.post('api/frontend/v1/stv/grades/getGradeFromPoints', {points, lehrveranstaltung_id}, config);
+		return this.$fhcApi.post('api/frontend/v1/stv/grades/getGradeFromPoints',
+			{
+				"points": points,
+				"lehrveranstaltung_id": lehrveranstaltung_id,
+				"studiensemester_kurzbz": studiensemester_kurzbz
+			},
+			config
+			);
 	}
 }
\ No newline at end of file
diff --git a/public/js/api/stv/prestudent.js b/public/js/api/stv/prestudent.js
index 25b4c85ad..8b2a5255b 100644
--- a/public/js/api/stv/prestudent.js
+++ b/public/js/api/stv/prestudent.js
@@ -2,8 +2,13 @@ export default {
 
 //------------- Prestudent.js------------------------------------------------------
 
-	get(prestudent_id){
-		return 	this.$fhcApi.post('api/frontend/v1/stv/prestudent/get/' + prestudent_id);
+	get(prestudent_id, studiensemester_kurzbz) {
+		return 	this.$fhcApi.post(
+			'api/frontend/v1/stv/prestudent/get/'
+			+ encodeURIComponent(prestudent_id)
+			+ '/'
+			+ encodeURIComponent(studiensemester_kurzbz)
+			);
 	},
 	updatePrestudent(form, prestudent_id, data){
 		return this.$fhcApi.post(form, 'api/frontend/v1/stv/prestudent/updatePrestudent/' + prestudent_id,
diff --git a/public/js/api/stv/students.js b/public/js/api/stv/students.js
index 797a13bb3..5a6c13922 100644
--- a/public/js/api/stv/students.js
+++ b/public/js/api/stv/students.js
@@ -1,12 +1,24 @@
 export default {
-	uid(uid) {
-		return this.$fhcApi.getUri('api/frontend/v1/stv/students/uid/' + uid);
+	uid(uid, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/students/'
+			+ encodeURIComponent(studiensemester_kurzbz)
+			+ '/uid/'
+			+ encodeURIComponent(uid);
+		return this.$fhcApi.getUri(url);
 	},
-	prestudent(prestudent_id) {
-		return this.$fhcApi.getUri('api/frontend/v1/stv/students/prestudent/' + prestudent_id);
+	prestudent(prestudent_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/students/'
+			+ encodeURIComponent(studiensemester_kurzbz)
+			+ '/prestudent/'
+			+ encodeURIComponent(prestudent_id);
+		return this.$fhcApi.getUri(url);
 	},
-	person(person_id) {
-		return this.$fhcApi.getUri('api/frontend/v1/stv/students/person/' + person_id);
+	person(person_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/stv/students/'
+			+ encodeURIComponent(studiensemester_kurzbz)
+			+ '/person/'
+			+ encodeURIComponent(person_id);
+		return this.$fhcApi.getUri(url);
 	},
 	verband(relative_path) {
 		return this.$fhcApi.getUri('api/frontend/v1/stv/students/' + relative_path);
diff --git a/public/js/apps/Studentenverwaltung.js b/public/js/apps/Studentenverwaltung.js
index bef605a10..8be451297 100644
--- a/public/js/apps/Studentenverwaltung.js
+++ b/public/js/apps/Studentenverwaltung.js
@@ -26,14 +26,118 @@ const ciPath = FHC_JS_DATA_STORAGE_OBJECT.app_root.replace(/(https:|)(^|\/\/)(.*
 const router = VueRouter.createRouter({
 	history: VueRouter.createWebHistory(),
 	routes: [
-		{ path: `/${ciPath}/studentenverwaltung`, component: FhcStudentenverwaltung },
-		{ path: `/${ciPath}/studentenverwaltung/prestudent/:prestudent_id`, component: FhcStudentenverwaltung },
-		{ path: `/${ciPath}/studentenverwaltung/prestudent/:prestudent_id/:tab`, component: FhcStudentenverwaltung },
-		{ path: `/${ciPath}/studentenverwaltung/student/:id`, component: FhcStudentenverwaltung },
-		{ path: `/${ciPath}/studentenverwaltung/person/:person_id`, component: FhcStudentenverwaltung }
+		{
+			name: 'index',
+			path: `/${ciPath}/studentenverwaltung`,
+			component: FhcStudentenverwaltung
+		},
+		{
+			name: 'studiensemester',
+			path: `/${ciPath}/studentenverwaltung/:studiensemester_kurzbz`,
+			component: FhcStudentenverwaltung,
+			props: (route) => {
+				return {
+					url_studiensemester_kurzbz: route.params.studiensemester_kurzbz
+				};
+			},
+			beforeEnter: (to, from, next) => {
+				const isSemester = /^[WS]S\d{4}$/.test(to.params.studiensemester_kurzbz);
+				if (!isSemester) {
+					return next({name: 'index'});
+				}
+				next();
+			}
+		},
+		{
+			path: `/${ciPath}/studentenverwaltung/:studiensemester_kurzbz/prestudent/:prestudent_id`,
+			component: FhcStudentenverwaltung,
+			props: (route) => {
+				return {
+					url_studiensemester_kurzbz: route.params.studiensemester_kurzbz,
+					url_mode: 'prestudent',
+					url_prestudent_id: route.params.prestudent_id
+				};
+			},
+			beforeEnter: (to, from, next) => {
+				const isSemester = /^[WS]S\d{4}$/.test(to.params.studiensemester_kurzbz);
+				if (!isSemester) {
+					return next({name: 'index'});
+				}
+				next();
+			}
+		},
+		{
+			path: `/${ciPath}/studentenverwaltung/:studiensemester_kurzbz/prestudent/:prestudent_id/:tab`,
+			component: FhcStudentenverwaltung,
+			props: (route) => {
+				return {
+					url_studiensemester_kurzbz: route.params.studiensemester_kurzbz,
+					url_mode: 'prestudent',
+					url_prestudent_id: route.params.prestudent_id,
+					url_tab: route.params.tab
+				};
+			},
+			beforeEnter: (to, from, next) => {
+				const isSemester = /^[WS]S\d{4}$/.test(to.params.studiensemester_kurzbz);
+				if (!isSemester) {
+					return next({name: 'index'});
+				}
+				next();
+			}
+		},
+		{
+			path: `/${ciPath}/studentenverwaltung/:studiensemester_kurzbz/student/:id`,
+			component: FhcStudentenverwaltung,
+			props: (route) => {
+				return {
+					url_studiensemester_kurzbz: route.params.studiensemester_kurzbz,
+					url_mode: 'student',
+					url_student_id: route.params.id
+				};
+			},
+			beforeEnter: (to, from, next) => {
+				const isSemester = /^[WS]S\d{4}$/.test(to.params.studiensemester_kurzbz);
+				if (!isSemester) {
+					return next({name: 'index'});
+				}
+				next();
+			}
+		},
+		{
+			path: `/${ciPath}/studentenverwaltung/:studiensemester_kurzbz/person/:person_id`,
+			component: FhcStudentenverwaltung,
+			props: (route) => {
+				return {
+					url_studiensemester_kurzbz: route.params.studiensemester_kurzbz,
+					url_mode: 'person',
+					url_prestudent_id: route.params.person_id
+				};
+			},
+			beforeEnter: (to, from, next) => {
+				const isSemester = /^[WS]S\d{4}$/.test(to.params.studiensemester_kurzbz);
+				if (!isSemester) {
+					return next({name: 'index'});
+				}
+				next();
+			}
+		},
+		{
+			path: '/:pathMatch(.*)*',
+			redirect: {
+				name: 'index'
+			}
+		}
 	]
 });
 
+router.afterEach((to, from, failure) => {
+	if (to.params.studiensemester_kurzbz) {
+		document.title = to.params.studiensemester_kurzbz + ' - Studierendenverwaltung FH-Complete';
+	} else {
+		document.title = 'Studierendenverwaltung FH-Complete';
+	}
+});
+
 const app = Vue.createApp({
 	name: 'StudentenverwaltungApp'
 });
diff --git a/public/js/components/Stv/Studentenverwaltung.js b/public/js/components/Stv/Studentenverwaltung.js
index 6fa626695..55892c02b 100644
--- a/public/js/components/Stv/Studentenverwaltung.js
+++ b/public/js/components/Stv/Studentenverwaltung.js
@@ -85,9 +85,7 @@ export default {
 					student: {
 						defaultaction: {
 							type: "link",
-							action: function(data) {
-								return FHC_JS_DATA_STORAGE_OBJECT.app_root + FHC_JS_DATA_STORAGE_OBJECT.ci_router + '/studentenverwaltung/student/' + data.uid;
-							}
+							action: this.buildStudentSearchResultLink
 						},
 						childactions: [
 						]
@@ -95,9 +93,7 @@ export default {
 					prestudent: {
 						defaultaction: {
 							type: "link",
-							action: function(data) {
-								return FHC_JS_DATA_STORAGE_OBJECT.app_root + FHC_JS_DATA_STORAGE_OBJECT.ci_router + '/studentenverwaltung/prestudent/' + data.prestudent_id;
-							}
+							action: this.buildPrestudentSearchResultLink
 						},
 						childactions: [
 						]
@@ -133,15 +129,61 @@ export default {
 			}
 		}
 	},
+	watch: {
+		'$attrs.url_studiensemester_kurzbz': function (newVal, oldVal) {
+			if (newVal !== oldVal) {
+				this.studiensemesterKurzbz = newVal;
+				this.$refs.stvList.updateUrl();
+				this.$refs.details.reload();
+			}
+		},
+		'$attrs.url_mode': function () {
+			this.handlePersonUrl();
+		}
+	},
 	methods: {
-		onSelectVerband({link, studiengang_kz}) {
+		buildPrestudentSearchResultLink(data) {
+			return FHC_JS_DATA_STORAGE_OBJECT.app_root
+				+ FHC_JS_DATA_STORAGE_OBJECT.ci_router
+				+ '/studentenverwaltung'
+				+ '/' + this.studiensemesterKurzbz
+				+ '/prestudent/'
+				+ data.prestudent_id;
+		},
+		buildStudentSearchResultLink(data) {
+			return FHC_JS_DATA_STORAGE_OBJECT.app_root
+				+ FHC_JS_DATA_STORAGE_OBJECT.ci_router
+				+ '/studentenverwaltung'
+				+ '/' + this.studiensemesterKurzbz
+				+ '/student/'
+				+ data.uid;
+		},
+		onSelectVerband( {link, studiengang_kz}) {
+			let urlpath = String(link);
+			if (!urlpath.match(/\/prestudent/))
+			{
+				urlpath = 'CURRENT_SEMESTER' + '/' + urlpath;
+			}
 			this.studiengangKz = studiengang_kz;
 			this.$refs.stvList.updateUrl(
-				ApiStv.students.verband(link)
-			);
+				ApiStv.students.verband(urlpath)
+				);
+			this.$router.push({
+				name: 'studiensemester',
+				params: {
+					studiensemester_kurzbz: this.studiensemesterKurzbz
+				}
+			});
 		},
 		studiensemesterChanged(v) {
 			this.studiensemesterKurzbz = v;
+
+			this.$router.push({
+				params: {
+					studiensemester_kurzbz: v
+				}
+			});
+
 			this.$refs.stvList.updateUrl();
 			this.$refs.details.reload();
 		},
@@ -150,9 +192,38 @@ export default {
 		},
 		searchfunction(params, config) {
 			return this.$api.call(ApiSearchbar.searchStv(params), config);
+		},
+		handlePersonUrl() {
+			if (this.$route.params.id) {
+				this.$refs.stvList.updateUrl(
+					ApiStv.students.uid(this.$route.params.id, 'CURRENT_SEMESTER'),
+					true
+					);
+			} else if (this.$route.params.prestudent_id) {
+				this.$refs.stvList.updateUrl(
+					ApiStv.students.prestudent(this.$route.params.prestudent_id, 'CURRENT_SEMESTER'),
+					true
+					);
+			} else if (this.$route.params.person_id) {
+				this.$refs.stvList.updateUrl(
+					ApiStv.students.person(this.$route.params.person_id, 'CURRENT_SEMESTER'),
+					true
+					);
+			}
 		}
 	},
 	created() {
+		if (!this.$attrs?.url_studiensemester_kurzbz) {
+			this.$router.replace({
+				name: 'studiensemester',
+				params: {
+					studiensemester_kurzbz: this.defaultSemester
+				}
+			});
+		} else {
+			this.studiensemesterKurzbz = this.$attrs.url_studiensemester_kurzbz;
+		}
+
 		this.$api
 			.call(ApiStv.kontakt.address.getNations())
 			.then(result => {
@@ -214,23 +285,7 @@ export default {
 	mounted() {
 		//Test manu Systemerror
 		//FHC_JS_DATA_STORAGE_OBJECT.systemerror_mailto = 'ma0068@technikum-wien.at';this.$fhcAlert.handleSystemError(1);
-		if (this.$route.params.id) {
-			this.$refs.stvList.updateUrl(
-				ApiStv.students.uid(this.$route.params.id),
-				true
-			);
-		} else if (this.$route.params.prestudent_id) {
-			this.$refs.stvList.updateUrl(
-				ApiStv.students.prestudent(this.$route.params.prestudent_id),
-				true
-			);
-		} else if (this.$route.params.person_id) {
-			this.$refs.stvList.updateUrl(
-				ApiStv.students.person(this.$route.params.person_id),
-				true
-			);
-		}
-
+		this.handlePersonUrl();
 	},
 	template: `
 	<div class="stv">
@@ -250,7 +305,7 @@ export default {
 						<button type="button" class="btn-close text-reset" data-bs-dismiss="offcanvas" :aria-label="$p.t('ui/schliessen')"></button>
 					</div>
 					<stv-verband @select-verband="onSelectVerband" class="col" style="height:0%"></stv-verband>
-					<stv-studiensemester :default="defaultSemester" @changed="studiensemesterChanged"></stv-studiensemester>
+					<stv-studiensemester v-model:studiensemester-kurzbz="studiensemesterKurzbz" @update:studiensemester-kurzbz="studiensemesterChanged"></stv-studiensemester>
 				</nav>
 				<main class="col-md-8 ms-sm-auto col-lg-9 col-xl-10">
 					<vertical-split>
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Details.js b/public/js/components/Stv/Studentenverwaltung/Details/Details.js
index eacabccc0..45ee3bdd5 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Details.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Details.js
@@ -41,6 +41,10 @@ export default {
 		$reloadList: {
 			from: '$reloadList',
 			required: true
+		},
+		currentSemester: {
+			from: 'currentSemester',
+			required: true
 		}
 	},
 	props: {
@@ -101,7 +105,7 @@ export default {
 	methods: {
 		updateStudent(n) {
 			return this.$api
-				.call(ApiStvDetails.get(n.prestudent_id))
+				.call(ApiStvDetails.get(n.prestudent_id, this.currentSemester))
 				.then(result => {
 					this.data = result.data;
 					if (!this.data.familienstand)
@@ -116,7 +120,11 @@ export default {
 
 			this.$refs.form.clearValidation();
 			return this.$refs.form
-				.call(ApiStvDetails.save(this.modelValue.prestudent_id, this.changed))
+				.call(ApiStvDetails.save(
+					this.modelValue.prestudent_id,
+					this.currentSemester,
+					this.changed
+					))
 				.then(result => {
 					this.original = {...this.data};
 					this.changed = {};
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Repeater.js b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Repeater.js
index ee70a721c..a4cfeaafb 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Repeater.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Repeater.js
@@ -9,6 +9,12 @@ export default {
 	emits: [
 		"copied"
 	],
+	inject: {
+		currentSemester: {
+			from: 'currentSemester',
+			required: true
+		}
+	},
 	props: {
 		student: Object,
 		allSemester: Boolean
@@ -24,7 +30,7 @@ export default {
 				ajaxURL: 'dummy',
 				ajaxRequestFunc: () => this.$api.call(ApiStvGrades.getRepeaterGrades(
 					this.student.prestudent_id,
-					this.allSemester
+						(!this.allSemester ? this.currentSemester : null)
 				)),
 				ajaxResponse: (url, params, response) => {
 					return response.data || [];
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Teacher.js b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Teacher.js
index 54342a955..e566d3a09 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Teacher.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Teacher.js
@@ -9,6 +9,12 @@ export default {
 	emits: [
 		"copied"
 	],
+	inject: {
+		currentSemester: {
+			from: 'currentSemester',
+			required: true
+		}
+	},
 	props: {
 		student: Object,
 		allSemester: Boolean
@@ -24,7 +30,7 @@ export default {
 				ajaxURL: 'dummy',
 				ajaxRequestFunc: () => this.$api.call(ApiStvGrades.getTeacherProposal(
 					this.student.prestudent_id,
-					this.allSemester
+						(!this.allSemester ? this.currentSemester : null)
 				)),
 				ajaxResponse: (url, params, response) => {
 					return response.data || [];
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis.js b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis.js
index 0cc30f606..ce912c240 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis.js
@@ -5,14 +5,22 @@ import ZeugnisDocuments from './Zeugnis/Documents.js';
 import ApiStvGrades from '../../../../../api/factory/stv/grades.js';
 
 export default {
+	name: 'Zeugnis',
 	components: {
 		CoreFilterCmpt,
 		ZeugnisActions,
 		ZeugnisDocuments
 	},
-	inject: [
-		'config'
-	],
+	inject: {
+		config: {
+			from: 'config',
+			required: true
+		},
+		currentSemester: {
+			from: 'currentSemester',
+			required: true
+		}
+	},
 	props: {
 		student: Object,
 		allSemester: Boolean
@@ -103,7 +111,8 @@ export default {
 									.call(
 										ApiStvGrades.getGradeFromPoints(
 											filterTerm,
-											cell.getData().lehrveranstaltung_id
+											cell.getData().lehrveranstaltung_id,
+											this.currentSemester
 										),
 										{ errorHandling: false }
 									)
@@ -201,7 +210,7 @@ export default {
 				ajaxURL: 'dummy',
 				ajaxRequestFunc: () => this.$api.call(ApiStvGrades.getCertificate(
 					this.student.prestudent_id,
-					this.allSemester
+						(!this.allSemester ? this.currentSemester : null)
 				)),
 				ajaxResponse: (url, params, response) => {
 					return response.data || [];
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis/Actions.js b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis/Actions.js
index 303098cf9..1ffa47a30 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis/Actions.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis/Actions.js
@@ -5,6 +5,7 @@ import ZeugnisDocuments from './Documents.js';
 import ApiStvGrades from '../../../../../../api/factory/stv/grades.js';
 
 export default {
+	name: 'ZeugnisActions',
 	components: {
 		CoreForm,
 		FormInput,
@@ -14,9 +15,16 @@ export default {
 		'setGrade',
 		'deleteGrade'
 	],
-	inject: [
-		'config'
-	],
+	inject: {
+		config: {
+			from: 'config',
+			required: true
+		},
+		currentSemester: {
+			from: 'currentSemester',
+			required: true
+		}
+	},
 	props: {
 		selected: Array
 	},
@@ -66,7 +74,8 @@ export default {
 			this.$refs.points
 				.call(ApiStvGrades.getGradeFromPoints(
 					query,
-					this.selected.find(Boolean)?.lehrveranstaltung_id
+					this.selected.find(Boolean)?.lehrveranstaltung_id,
+					this.currentSemester
 				))
 				.then(result => {
 					if (result.data === null) {
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis/Documents.js b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis/Documents.js
index ed27dc283..121efddbf 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis/Documents.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis/Documents.js
@@ -8,6 +8,7 @@ async function callPermissionUrl($api, url) {
 }
 
 export default {
+	name: 'ZeugnisDocuments',
 	components: {
 		PvTieredMenu: primevue.tieredmenu
 	},
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Prestudent.js b/public/js/components/Stv/Studentenverwaltung/Details/Prestudent.js
index 01f31b696..3fa43e624 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Prestudent.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Prestudent.js
@@ -30,8 +30,9 @@ export default {
 			from: 'hasAdminPermission',
 			default: false
 		},
-		defaultSemester: {
-			from: 'defaultSemester',
+		currentSemester: {
+			from: 'currentSemester',
+			required: true
 		}
 	},
 	props: {
@@ -107,7 +108,7 @@ export default {
 	methods: {
 		loadPrestudent() {
 			return this.$api
-				.call(ApiStvPrestudent.get(this.modelValue.prestudent_id))
+				.call(ApiStvPrestudent.get(this.modelValue.prestudent_id, this.currentSemester))
 				.then(result => result.data)
 				.then(result => {
 					this.data = result;
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Status/Dropdown.js b/public/js/components/Stv/Studentenverwaltung/Details/Status/Dropdown.js
index ab8f83fab..d72c36b7c 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Status/Dropdown.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Status/Dropdown.js
@@ -14,6 +14,10 @@ export default {
 		$reloadList: {
 			from: '$reloadList',
 			required: true
+		},
+		currentSemester: {
+			from: 'currentSemester',
+			required: true
 		}
 	},
 	emits: [
@@ -242,6 +246,7 @@ export default {
 			return askForSemester();
 		},
 		changeStatus(data) {
+			data.currentSemester = this.currentSemester;
 			Promise
 				.allSettled(
 					this.prestudentIds.map(prestudent_id => this.$api.call(
diff --git a/public/js/components/Stv/Studentenverwaltung/List.js b/public/js/components/Stv/Studentenverwaltung/List.js
index c5f7a07c0..5de57bf77 100644
--- a/public/js/components/Stv/Studentenverwaltung/List.js
+++ b/public/js/components/Stv/Studentenverwaltung/List.js
@@ -8,9 +8,16 @@ export default {
 		CoreFilterCmpt,
 		ListNew
 	},
-	inject: [
-		'lists'
-	],
+	inject: {
+		'lists': {
+			from: 'lists',
+			required: true
+		},
+		currentSemester: {
+			from: 'currentSemester',
+			required: true
+		}
+	},
 	props: {
 		selected: Array,
 		studiengangKz: Number,
@@ -155,7 +162,8 @@ export default {
 			filterKontoMissingCounter: undefined,
 			count: 0,
 			filteredcount: 0,
-			selectedcount: 0
+			selectedcount: 0,
+			currentEndpointRawUrl: ''
 		}
 	},
 	methods: {
@@ -192,13 +200,21 @@ export default {
 
 			if( endpoint === undefined ) 
 			{
-				endpoint = { url: '' };
+				endpoint = {url: this.currentEndpointRawUrl};
 			} 
 			else if( endpoint.url === undefined ) 
 			{
-				endpoint.url = '';
+				endpoint.url = this.currentEndpointRawUrl;
+			} else
+			{
+				this.currentEndpointRawUrl = endpoint.url;
 			}
 
+			endpoint.url = endpoint.url.replace(
+				'CURRENT_SEMESTER',
+				encodeURIComponent(this.currentSemester)
+				);
+
 			const params = {}, filter = {};
 			if (this.filterKontoCount0)
 				filter.konto_count_0 = this.filterKontoCount0;
diff --git a/public/js/components/Stv/Studentenverwaltung/Studiensemester.js b/public/js/components/Stv/Studentenverwaltung/Studiensemester.js
index c52d584fd..32b0a831d 100644
--- a/public/js/components/Stv/Studentenverwaltung/Studiensemester.js
+++ b/public/js/components/Stv/Studentenverwaltung/Studiensemester.js
@@ -2,12 +2,12 @@ import {CoreRESTClient} from '../../../RESTClient.js';
 
 export default {
 	emits: [
-		'changed'
+		'update:studiensemesterKurzbz'
 	],
 	props: {
-		default: {
+		studiensemesterKurzbz: {
 			type: String,
-			default: ''
+			required: true
 		}
 	},
 	data() {
@@ -68,7 +68,7 @@ export default {
 				})
 				.then(() => {
 					this.loading = false;
-					this.$emit('changed', this.list[this.current]);
+					this.$emit('update:studiensemesterKurzbz', this.list[this.current]);
 				})
 				.catch(error => {
 					this.current = fallback;
@@ -77,6 +77,11 @@ export default {
 				});
 		}
 	},
+	watch: {
+		'studiensemesterKurzbz': function () {
+			this.current = this.list.indexOf(this.studiensemesterKurzbz);
+		}
+	},
 	created() {
 		CoreRESTClient
 			.get('components/stv/studiensemester')
@@ -84,7 +89,7 @@ export default {
 			.then(result => {
 				this.list = result.map(el => el.studiensemester_kurzbz);
 				this.loading = false;
-				this.current = this.list.indexOf(this.default);
+				this.current = this.list.indexOf(this.studiensemesterKurzbz);
 			})
 			.catch(this.$fhcAlert.handleSystemError);
 	},