During the phase of learning the proper position of toilet seats and dirty clothes storage we can secretly install a small microchip that injects minute amounts of behavior alterating chemicals that simulate the pain of a kick in the groin whenever the student shows signs of demonstrating child-like temper tantrums.
The cost for that service of course, is in addition to the normal school tuition. Certain exceptional cases may require additional steps (electro-therapy, lobotomy, endless hours of forced watching chick flicks, etc.)