I've loved this thread!
In the winter of early '63, I and my younger sister were 'evacuated' from a snowbound farmhouse, to our grandparents' small welsh town. As a six-year old I was able to trot along to school with my Grampa, who was the headmaster. I remember earnestly trying to keep my head down and blend in with the rest of the class, so when the teacher asked a question and all around me unruly kids yelled from their seats, I reluctantly joined in. The teacher immediately shouted at me that THIS was not the way we behaved in this school, and that she had expected BETTER from me! That blew my cover. .
At morning playtime as we broke through the ice topping our milk rations, the same teacher took a large enamel bowl down from a tall cupboard and placed it next to a girl who was stoically sucking up her milk. Minutes after she'd finished, the girl threw up into the bowl, which was whisked away, washed and returned to its place. This happened every day, for the eight weeks until the snow had thawed, the floods had subsided and we were returned to our parents.
Grampa was a truly lovely man and I've never believed he was aware of the atrocities occurring in his school on a daily basis.