L.S.
He might do better, next year, in a different classroom. My daughter (3) was in a pre-school class this year with a very wild child. Unfortunately, my duaghter is a follower and would often follow this wild child into trouble. The school just moved my daughter up to a new class (3/4 where she was previously in 2/3). She has blossomed in the new classroom and I think a HUGE part of that is being away from the wild child that was leading her astray (and being away from the squeaky wheel - as you say). I think her class room environment is more stable now.
Good luck!
L.