My 13yr old step son was caught by his teacher playing with him self in class, he was sitting at his dest whilst masterbaiting...his mum and my self have spoke to him about this and he refused to admit it at first but now he has admitted it but i dont feel that he really understands that he should only do this in privert (his bedroom), i have told him that it is ok and a normal thing to do but it was not ok to do it in school and were he was seen by his teacher and two 12yr old girls. can anyone please help me with this coz i do feel that he will proberly do this again even though we have told him not to.