Z's teacher, Z's principal, B & I had a sit down. here's what we left with:
beings his latest problems have occurred out on the playground during recesses, that's our focus now. at the end of each recess, he will get a sticker from his teacher if he manages to keep his hands, feet & objects (what?) to himself. so in addition to the regular classroom happy face/unhappy face, stickers for playground behavior. the principal has decided to really give the boy incentive, once he gets x amount of stickers for being good at recesses, she will give him a game.
at home, he will get some sort of little candy treat like m&m's or something for each sticker.
& finally, his teacher said the past 2 days he's been fantastic in class, working hard & getting along with classmates. she told us they played a round of dodgeball where he was 1 of the 2 last players left & when the ball came at him he lunged over it. he still was hit (& cried) but everyone cheered him on & yelled about how cool his jump was.