diff --git a/application/controllers/api/v1/crm/Prestudent.php b/application/controllers/api/v1/crm/Prestudent.php
index 7e963b42a..8b274cd06 100644
--- a/application/controllers/api/v1/crm/Prestudent.php
+++ b/application/controllers/api/v1/crm/Prestudent.php
@@ -12,7 +12,7 @@
  */
 // ------------------------------------------------------------------------
 
-if (!defined("BASEPATH")) exit("No direct script access allowed");
+if (!defined('BASEPATH')) exit('No direct script access allowed');
 
 class Prestudent extends APIv1_Controller
 {
@@ -23,9 +23,9 @@ class Prestudent extends APIv1_Controller
 	{
 		parent::__construct();
 		// Load model PrestudentModel
-		$this->load->model("crm/prestudent_model", "PrestudentModel");
+		$this->load->model('crm/prestudent_model', 'PrestudentModel');
 		// Load library ReihungstestLib
-		$this->load->library("ReihungstestLib");
+		$this->load->library('ReihungstestLib');
 	}
 
 	/**
@@ -33,7 +33,7 @@ class Prestudent extends APIv1_Controller
 	 */
 	public function getPrestudent()
 	{
-		$prestudentID = $this->get("prestudent_id");
+		$prestudentID = $this->get('prestudent_id');
 		
 		if (isset($prestudentID))
 		{
@@ -52,11 +52,80 @@ class Prestudent extends APIv1_Controller
 	 */
 	public function getPrestudentByPersonID()
 	{
-		$person_id = $this->get("person_id");
+		$person_id = $this->get('person_id');
 		
 		if (isset($person_id))
 		{
-			$result = $this->PrestudentModel->load(array("person_id" => $person_id));
+			$result = $this->PrestudentModel->load(array('person_id' => $person_id));
+			
+			$this->response($result, REST_Controller::HTTP_OK);
+		}
+		else
+		{
+			$this->response();
+		}
+	}
+	
+	/**
+	 * @return void
+	 */
+	public function getSpecialization()
+	{
+		$prestudent_id = $this->get('prestudent_id');
+		$titel = $this->get('titel');
+		
+		if (isset($prestudent_id) && isset($titel))
+		{
+			// Loads model Notiz_model
+			$this->load->model('person/Notiz_model', 'NotizModel');
+			
+			$result = $this->NotizModel->getSpecialization($prestudent_id, $titel);
+			
+			$this->response($result, REST_Controller::HTTP_OK);
+		}
+		else
+		{
+			$this->response();
+		}
+	}
+	
+	/**
+	 * @return void
+	 */
+	public function postRmSpecialization()
+	{
+		$notiz_id = $this->post()['notiz_id'];
+		
+		if (isset($notiz_id))
+		{
+			// Loads model Notiz_model
+			$this->load->model('person/Notiz_model', 'NotizModel');
+			
+			$result = $this->NotizModel->rmSpecialization($notiz_id);
+			
+			$this->response($result, REST_Controller::HTTP_OK);
+		}
+		else
+		{
+			$this->response();
+		}
+	}
+	
+	/**
+	 * @return void
+	 */
+	public function postSpecialization()
+	{
+		$prestudent_id = $this->post()['prestudent_id'];
+		$titel = $this->post()['titel'];
+		$text = $this->post()['text'];
+		
+		if (isset($prestudent_id) && isset($titel) && isset($text))
+		{
+			// Loads model Notiz_model
+			$this->load->model('person/Notiz_model', 'NotizModel');
+			
+			$result = $this->NotizModel->addSpecialization($prestudent_id, $titel, $text);
 			
 			$this->response($result, REST_Controller::HTTP_OK);
 		}
@@ -75,9 +144,9 @@ class Prestudent extends APIv1_Controller
 		
 		if ($this->_validate($prestudent))
 		{
-			if (isset($prestudent["prestudent_id"]))
+			if (isset($prestudent['prestudent_id']))
 			{
-				$result = $this->PrestudentModel->update($prestudent["prestudent_id"], $prestudent);
+				$result = $this->PrestudentModel->update($prestudent['prestudent_id'], $prestudent);
 			}
 			else
 			{
@@ -99,7 +168,7 @@ class Prestudent extends APIv1_Controller
 	{
 		if ($this->_validate($this->delete()))
 		{
-			$result = $this->PrestudentModel->delete($this->delete()["prestudent_id"]);
+			$result = $this->PrestudentModel->delete($this->delete()['prestudent_id']);
 			
 			$this->response($result, REST_Controller::HTTP_OK);
 		}
@@ -118,10 +187,10 @@ class Prestudent extends APIv1_Controller
 		
 		if ($this->_validateReihungstest($ddReihungstest))
 		{
-			if(isset($ddReihungstest["new"]) && $ddReihungstest["new"] == true)
+			if(isset($ddReihungstest['new']) && $ddReihungstest['new'] == true)
 			{
 				// Remove new parameter to avoid DB insert errors
-				unset($ddReihungstest["new"]);
+				unset($ddReihungstest['new']);
 				
 				$result = $this->reihungstestlib->insertPersonReihungstest($ddReihungstest);
 			}
@@ -145,7 +214,7 @@ class Prestudent extends APIv1_Controller
 	{
 		$ddReihungstest = $this->_parseData($this->post());
 		
-		if (isset($ddReihungstest["rt_person_id"]))
+		if (isset($ddReihungstest['rt_person_id']))
 		{
 			$result = $this->reihungstestlib->deletePersonReihungstest($ddReihungstest);
 			
@@ -164,11 +233,11 @@ class Prestudent extends APIv1_Controller
 	
 	private function _validateReihungstest($ddReihungstest = NULL)
 	{
-		if (!isset($ddReihungstest["person_id"]) || !isset($ddReihungstest["rt_id"]) || !isset($ddReihungstest["studienplan_id"]))
+		if (!isset($ddReihungstest['person_id']) || !isset($ddReihungstest['rt_id']) || !isset($ddReihungstest['studienplan_id']))
 		{
 			return false;
 		}
 		
 		return true;
 	}
-}
+}
\ No newline at end of file
diff --git a/application/models/person/Notiz_model.php b/application/models/person/Notiz_model.php
index 8027f038d..8aa07a038 100644
--- a/application/models/person/Notiz_model.php
+++ b/application/models/person/Notiz_model.php
@@ -1,7 +1,7 @@
 <?php
+
 class Notiz_model extends DB_Model
 {
-
 	/**
 	 * Constructor
 	 */
@@ -11,4 +11,88 @@ class Notiz_model extends DB_Model
 		$this->dbTable = 'public.tbl_notiz';
 		$this->pk = 'notiz_id';
 	}
-}
+	
+	// ------------------------------------------------------------------------------------------------------
+	/**
+	 * Get a specialization for a prestudent
+	 */
+	public function getSpecialization($prestudent_id, $titel)
+	{
+		// Join with the table public.tbl_notizzuordnung using notiz_id
+		$this->addJoin('public.tbl_notizzuordnung', 'notiz_id');
+		
+		return $this->NotizModel->loadWhere(array('prestudent_id' => $prestudent_id, 'titel' => $titel));
+	}
+	
+	/**
+	 * Remove a specialization
+	 */
+	public function rmSpecialization($notiz_id)
+	{
+		// Loads model Notizzuordnung_model
+		$this->load->model('person/Notizzuordnung_model', 'NotizzuordnungModel');
+		
+		// Start DB transaction
+		$this->db->trans_start(false);
+		
+		$result = $this->delete(array('notiz_id' => $notiz_id));
+		if (is_object($result) && $result->error == EXIT_SUCCESS)
+		{
+			$result = $this->NotizzuordnungModel->delete(array('notiz_id' => $notiz_id));
+		}
+		
+		// Transaction complete!
+		$this->db->trans_complete();
+		
+		// Check if everything went ok during the transaction
+		if ($this->db->trans_status() === false || (is_object($result) && $result->error != EXIT_SUCCESS))
+		{
+			$this->db->trans_rollback();
+			$result = error($result->msg, EXIT_ERROR);
+		}
+		else
+		{
+			$this->db->trans_commit();
+			$result = success('Specialization successfully removed');
+		}
+		
+		return $result;
+	}
+
+	/**
+	 * Add a specialization for a prestudent
+	 */
+	public function addSpecialization($prestudent_id, $titel, $text)
+	{
+		// Loads model Notizzuordnung_model
+		$this->load->model('person/Notizzuordnung_model', 'NotizzuordnungModel');
+		
+		// Start DB transaction
+		$this->db->trans_start(false);
+		
+		$result = $this->insert(array('titel' => $titel, 'text' => $text, 'erledigt' => true));
+		$notiz_id = $result->retval;
+		if (is_object($result) && $result->error == EXIT_SUCCESS)
+		{
+			$result = $this->NotizzuordnungModel->insert(array('notiz_id' => $notiz_id, 'prestudent_id' => $prestudent_id));
+		}
+		
+		// Transaction complete!
+		$this->db->trans_complete();
+		
+		// Check if everything went ok during the transaction
+		if ($this->db->trans_status() === false || (is_object($result) && $result->error != EXIT_SUCCESS))
+		{
+			$this->db->trans_rollback();
+			$result = error($result->msg, EXIT_ERROR);
+		}
+		else
+		{
+			$this->db->trans_commit();
+			$result = success($notiz_id);
+		}
+		
+		return $result;
+	}
+	// ------------------------------------------------------------------------------------------------------
+}
\ No newline at end of file