My 9 year old son is getting in trouble at school for playing games he is not supposed to be doing. He has also started missing assignments. He went to his room at 4 last Friday and Saturday evening for the remainder of the day. On Sunday he had to sit in our formal living room for 2 hours and think about his choices. He has had no electronics of any kind and still went back to school and played the games again. What more punishment will work??