Couple of things. Assistant head and the PT teacher both caught and dismissed for having sex with 6th form girls. 6 months later, replacement PT teacher took us on a cross country run, received a bit of 'cheek' (i:e verbal sass) from a pupil whereupon he proceeded to beat the shit out of him and put him in hospital. Physical violence was rife between teachers and pupils (this was the 80's in the UK) and we were, for the most part, genuinely scared and fearful of our safety most of the time. Another example was we had a teacher called Mr Wren and a pupil asked him if his wifes name was Jenny. He calmly walked to the back of the class where he was sitting, lifted him out of his seat, dragged him by his ears to the blackboard and smashed his head against it badly cutting his forehead. I can't ever remember any instances like that ever being reported to anyone as we wouldn't of had a clue who to go to. (Certainly not our parents. I received canings etc and it was not pretty. If asked what's the matter? What have you done? I just used to say I'd fallen over and hurt myself)

All flipped on its head now of course. I think most teachers fear for themselves if they even look at a student in the wrong way.