DS is 4 and has a speech delay due to hearing problems and a difficult birth. I have noticed of late that an issue is occurring between him and a precocious 5 year old in his class, who lacks emotional maturity. My ds by contrast is quite emotionally warm and thoughtful. The other boy half plays with him, and initiates play. However, the boy includes a lot of snide laughing, and physical stuff. Ds came home with a bruise on his back, caused by this boy pushing him over. I have witnessed them 'playing' together in a tent, which has deteriorated into this boy kneeling on my son's chest until he can't breathe (as soon as I heard this I intervened and told the boy that friends don't hurt each other). Please tell me how to sort this out - I cannot bare to think of DS getting bullied in this way, but I don't want to read too much into 'normal' roughhousing and go storming in and speaking to the teacher when it could 'blow over' as it might make things worse - please give me some ideas!