private function _checkBackendAccessGroup()
 {
     if ($this->_user->userGroup->isAdmin()) {
         $this->setState('mainNavItems', Admin::getMainNavItems());
         $this->setState('returnUrl', Yii::app()->backendUrl);
         $this->setState('backendAccess', true);
     } elseif (intval($this->_user->user_group_id) == CollegeAdmin::USER_GROUP_ID) {
         $this->setState('mainNavItems', CollegeAdmin::getMainNavItems());
         $this->setState('returnUrl', Yii::app()->backendUrl);
         $this->setState('backendAccess', true);
     }
 }