/**
  * Все учебные планы
  * @return CArrayList 
  */
 public static function getAllCorriculums()
 {
     if (!self::$_cacheCorriculumsInit) {
         self::$_cacheCorriculumsInit = true;
         foreach (CActiveRecordProvider::getAllFromTable(TABLE_CORRICULUMS, "title asc")->getItems() as $ar) {
             $cor = new CCorriculum($ar);
             self::getCacheCorriculums()->add($cor->getId(), $cor);
         }
     }
     return self::getCacheCorriculums();
 }