I would say to write the dcm a letter with all the details as to what has been going on, how it's affecting you and the other kids, and emphasize that she needs to work with you on this issue otherwise it will have to mean termination because he is putting others in danger of physical harm. Hitting you with a toy is absolutely unacceptable! As for discipline, I would say that you need to find what he doesn't like, what REALLY gets to him. Maybe time out in a playpen or strapped into a booster or something, or taking away a toy that he really likes...when time outs fail, look for something else that would upset him, get his attention and start listening to you. Just my 2 cents