- Проверяем

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

@@ -150,6 +150,8 @@ $(document).ready(function() {
         type: 'inline',
         preloader: false
     });
+
+    $('#registration_form').on('click', function() {alert('asd');});
 }); 
  
 // pre-submit callback 

common/modules/users/forms/RegistrationUserPopupForm.php

@@ -2,7 +2,6 @@
 
 use common\modules\users\models\User;
 $elements = [
-    
     'open_form_reg' => '<div class="registration_form_left form_resp">',
     'errors_reg' => '<div class="errors-reg_popup"></div>',
     'name'	=> ['type' => 'text', 'placeholder'=>"Ваше имя*", 'options'=>['label'=>false],