My DS attends the primary school I am employed at. There is child in his class with severe behavioural needs but no diagnosis of anything yet so no support. There is no class TA. One of the children is quite violent and verbally abusive towards the teacher, my DS is seeing this and hearing dreadful language almost daily. He is scared of this child. The head isn't doing anything about it. The teacher is on the verge of a breakdown. I feel I should do something but I hate confrontation and I am worried about raising concerns due to my position in the school. What should I do?