classes:  lecturer. Teachers stop teaching without notice, many times to the school and have to wait until 8h and then leave.  curriculum. Teachers stop teaching without notice, many times to the school and have to wait until 8h and then leave.  facility. Teachers stop teaching without notice, many times to the school and have to wait until 8h and then leave.  general. Teachers stop teaching without notice, many times to the school and have to wait until 8h and then leave.