public function getMdlCourses(GcrEschool $eschool)
 {
     // removed course authorization
     //if (GcrEschoolTable::authorizeEschoolAccess($eschool))
     //{
     $params = $this->course_list->getParameters();
     return $eschool->getMdlCourses(false, $params['search_string'], $params['category_id']);
     //}
     return array();
 }