There was no sex segregation there either. Some of the teachers disapproved of girls associating with boys but that disapproval was on the same sort of level as disapproving of my writing with my left hand.
Misbehaviour in class was usually punished with the ruler to our hands. I can’t recall seeing anyone punished in the playground so I can’t say what the punishment there would have been. Serious or persistent misbehaviour was dealt with by the headmaster which could mean getting the slipper. I know because I was one of “the chosen few”. It was quite rare for anyone to be sent to the Head. I was the only one in my class as I remember.
I don’t remember much serious misbehaviour at all. Certainly not stealing or vandalism (in any reasonable sense of the word). Fights were rare. I only clearly remember one fight – involving a couple of girls. I don’t know what happened to them but they were separated and escorted off in the direction of the Head’s. office,