- Проверяем

common/modules/school/assets/js/school.js

@@ -151,7 +151,7 @@ $(document).ready(function() {
         preloader: false
     });
 
-    $('#registration_form').on('click', function() {alert('asd');});
+    $('.kurs_bt').on('click', function() {alert('asd');});
 }); 
  
 // pre-submit callback