public function getMuridWithoutKelas($tingkatan)
 {
     if ($tingkatan > 0) {
         $acc = new Account();
         $kls = new Kelas();
         global $db;
         /*$q = "SELECT admin_nama_depan,admin_id,murid_id,admin_foto FROM {$this->table_murid_kelas},{$this->table_name},{$acc->table_name} WHERE mk_ta_id = '$ta' AND mk_kelas_id = '$klsid' AND account_id = admin_id AND mk_murid_id = murid_id AND murid_aktiv = '1' ORDER BY mk_no_urut ASC";
           
           $q = "SELECT t1.nama_depan,t1.murid_id,t1.foto
           FROM {$this->table_name} t1,{$kls->table_name} t3
           LEFT JOIN {$this->table_murid_kelas} t2 ON t2.mk_murid_id = t1.murid_id
           WHERE t2.mk_kelas_id = t3.kelas_id AND t t2.mk_murid_id IS NULL AND t";
           */
         $q = "SELECT  admin_nama_depan,admin_id,murid_id,admin_foto,murid_tingkatan\n            FROM    {$this->table_name},{$acc->table_name}\n            WHERE account_id = admin_id AND murid_tingkatan = '{$tingkatan}' AND murid_aktiv = '1' AND  murid_id NOT IN (SELECT mk_murid_id FROM {$this->table_murid_kelas}) ORDER BY admin_nama_depan ASC";
         $muridkelas = $db->query($q, 2);
         $newMurid = array();
         foreach ($muridkelas as $databasemurid) {
             $m = new Murid();
             $m->fill(toRow($databasemurid));
             $newMurid[] = $m;
         }
         return $newMurid;
     } else {
         die('getMuridWithoutKelas butuh tingkatan');
     }
 }