At my girls grammar in the early 1960’s the slipper on the bottom or ruler across the hand or upper legs were the unofficial punishments handed down by most members of staff. They were nearly all female although we were lucky in having masters for Art, Maths and a dishy Chemistry master ( ratio 3:35 ). The men NEVER smacked or hit a girl – on the rare occasions they deemed CP was necessary it was off to the senior mistress for the cane.
Our PE mistress was the worst for the slipper. She kept a size 11 mans plimsole in her sports bag for any girl with dirty kit, forgotten towels lost items, lateness etc… Retribution was swift and painful – bend over the gym horse in your knickers in front of the class and one, two, three or sometimes even four whacks were administered. It stung and most girls cried a little.