Данные формируются в такой вид
[{"0":"1","id":"1","1":"350","Id_school":"350","2":  "5v","id_class":"5v","3":"matematika","Id_p":"mate  matika","4":"08\/20\/2011","date":"08\/20\/2011","5":"1","nomer_yroka":"1"},
{"0":"2","id":"2","1":"350","Id_school":"350","2":  "5v","id_class":"5v","3":"russkii","Id_p":"russkii  ","4":"08\/20\/2011","date":"08\/20\/2011","5":"2","nomer_yroka":"2"}
,{"0":"4","id":"4","1":"350","Id_school":"350","2"  :"5v","id_class":"5v","3":"qwerty","Id_p":"qwerty"  ,"4":"08\/20\/2011","date":"08\/20\/2011","5":"1","nomer_yroka":"1"}]
но тот вывод в div  который мы делали : 
success: function(data){
        for( var k in data ) {
            $( "#" + k ).html( data[ k ] );
		
        }
	}
перестает выводить ( наверное не понимаю какой из них ? )
<div id="Id_p"></div>