I have far more experience of the receiving end of CP in secondary school. I was slippered by both male and female teachers and caned by both the Headmistress and Associate Headmaster. In general but by no means always, female teachers tended to slipper harder than male teachers. Most of the boys I knew agreed so it wasn’t simply a matter of male teachers going easy on girls.
There was little difference between being caned by the Headmistress or the Associate Headmaster but it’s difficult to tell. I was caned twice by the Associate Headmaster but one of those was really only a “token caning”.