classes: lecturer. Using inefficient time, going too late and returning too late (8h30 to class 12h on). curriculum. Using inefficient time, going too late and returning too late (8h30 to class 12h on). facility. Using inefficient time, going too late and returning too late (8h30 to class 12h on). general. Using inefficient time, going too late and returning too late (8h30 to class 12h on).