fix

~dev_rating/application/classes/Controller/Teacher/Rating.php

@@ -135,6 +135,8 @@ class Controller_Teacher_Rating extends Controller_UserEnvi {
 
         $twig->studyGroupID = $this->GetSGID($id);
 
+        $twig->DisciplineID = $id;
+
 		$this->response->body($twig);
     }
 
@@ -284,6 +286,8 @@ class Controller_Teacher_Rating extends Controller_UserEnvi {
 
         $twig->studyGroupID = $this->GetSGID($id);
 
+        $twig->DisciplineID = $id;
+
         $this->response->body($twig);
     }
 }

~dev_rating/application/views/teacher/rating.twig

@@ -15,7 +15,7 @@
 	<h2 style="margin-left: 2.5%; font-weight: normal; color: #3399CC;">{{ SubjectName }}</h2>
 
 	<button class="downloadExcel">Скачать в excel формате</button>
-    {{ HTML.anchor('rate/'~Discipline.ID, 
+    {{ HTML.anchor('exam/'~DisciplineID, 
             "Перейти к сессии", 
             {'title': 'Сессия', 'class': 'exam_a'})|raw }}