I always wondered how painful the school strap actually was. I was strapped a couple of times at home, more as a token though.
I was hit on the hand a few times, in the classroom, which really was a non-event, but when they saw the pathetic effect, the edge of the ruler was used on my knuckles, which was painful, especially on a cold day.
All other CP was on my backside. Some of my teachers, whatever mood they were in, would select either the hand or you were required to bend. For some reason, I always had to bend over or touch my toes.
The cane without doubt was the most painful, followed by the plimsoll, then a delightful little punishment I received, a meter-long broad ruler. If they had drilled holes through it, as was done to the American paddle, it definitely would have been far more effective. It’s a wonder some teacher’s pet, didn’t suggest this.