That's it basically. My DS age 3 is being bitten at school. Every time by the same child. I don't know if he is also biting anyone else or just my boy. I know it's not uncommon behaviour for their age group but I feel like I should be doing something. Although what that is I'm unsure. The teacher is always very apologetic but then it's hardly her fault. What would you do? I find it very upsetting but feel like there's nothing I can do. Advice please.