A 14-year-old schoolboy has been arrested after a teacher was attacked, police have said.
The youngster was arrested after the incident at a school in Scarborough, North Yorkshire, on Friday 21 May.
He was later released on police bail pending further inquiries, a force spokesman added.
Police said the teacher, a 54-year-old man, was taken to hospital for a check-up after suffering swelling and bruising to his face.