I'm a teacher and I have a situation like this at the moment.. the teacher will report it to the school and then the school may call Doc's or put a complaint in if there is sufficient evidience that something "more" may be going on at home. Usually Doc's doesn't do anything unless there is a serious problem.. afterall we are talking about the government! Where I teach the teacher can make this complaint but usually it takes quite a lot for anything to happen about these situations.

The school should have contacted the parents many times and should make a home visit (like we do at my school), but I wouldn't suggest you get involved as the school will not listen to you in most cases. If they are aware there is an issue they will not tell you or the parents a complaint has been made with Doc's. It's possible Doc's has a case building for them at the moment and the parents don't know. It would vary state to state.