[Animal]

I recognize your frustration but that is all he is attempting to do is frustrate you. You've probably heard this before, but he is not worth the effort or the time involved in retaliating. Remember you must live with your actions and the consequences of those actions. All you'd be doing is stooping to his level and reducing yourself to no more of a bully than he is. Find a more creative way to deal with the problem that doesn't involve violence. I used to be a very violent individual and spent some time in jail when I was younger because of it.
Not to give you any bad ideas, but grade 6? At that age, appearance and acceptance by ones peers is very important. When I was in grade 6 I vaguely seem to remember an incident with the school bully, some itching powder and gym shorts!