He should write out the rules of the GAME footbll and add that to this "letter" he has to write.
Maybe he has been a pretty god kid all this time at school and things have just been blown WAY out of proportion. I think I would type a letter yourself and send it to school with him to turn in with his letter.
As another poster stated in your other post "BOYS WILL BE BOYS". These people need to get a grip. Rough housing on the playground is totally different than haveing a shoving match at the lockers and knocking into other students in the hallway.
Being disrespectful is one thing and playing a game in the playground is another.
This si not the best advice to give your son....but I would almost want to tell him that when he goes back to school he needs to have the kids he plays ball with just sit on a bench the entire recess. Eventually an adult should aproach them and ask them why they are not playing. DUH.....when we play, we get kicked out of school!!!!!!
And to think.....if your child is sick they barely give you any sick days w/out a Doctors note & here they kick 'em out for no reason. Makes no sense to me.
Bring out the games mom & let him have a good 'ol time at home tomorrow!