I find all parties in this story have gone completely bonkers. You are not exempt yourself-you detail how last week you were told not to touch the children. Your focus seems to be on the fact that shouting occurred, rather than the fact that you should not touch the children. Therefore the earlier (very good) post by @catbefriender , about how a lack of training mitigates you if you are in trouble, is perhaps irrelevant if you were expressly told the week before not to touch the children. If the HT puts the two incidents together, forgive me, but you come across as a bit thick skinned. You were told not to touch the children, and shortly after you cut a child's hair. The hair, for me at least, is merely unfortunate, but the hair after the sunscreen is someone who was warned but didn't actually listen. Sorry.