I can’t know of course but I think it’s likely that, if it had been a female teacher who repeatedly caught me taking a short cut across an out of bounds area, I’d have got the slipper after the third or fourth time. The male teacher who repeatedly caught me just told me off so, naturally, I just carried on until, after been caught three or four days running, I got the cane. If that teacher were trying to treat me leniently, it didn’t do me any favours in the end.
I’m not entirely convinced (as I’ve said before in our discussions) that girls and boys exhibit the same degree of misbehaviour. My own anecdotal experience is less extensive than yours, as I attended a boys-only secondary school, but it was certainly the case that there was much more misbehaviour by boys than girls at my primary school. Of course I can’t say how representative that was.