Hi!
When I was in secondary school I was in CAST for maths (I still suck at it) but the teacher there used to get us to rub our ears until they were red at the beginning of the class, to get our 'brains working' and if they weren't sufficiently red enough he would come round and rub them roughly for us?!
I usually laugh about it, but I'm thinking it wouldn't be acceptable now would it?!
I am 33 if that makes any difference!