I can't really give you advise about school, since you are ahead of us, but I would recommend finding a therapist that does group therapy with children his age. The group therapy my son's been going to has made a really huge difference with how he interacts with other kids!! He no longer comes home from school with stories about how kids won't play with him or how they bully him. Now he comes home with stories of the pokemon game they played, or the hero factory legos they want to swap. SO MUCH BETTER.
