I might have done reasonably well in a school that didn’t have CP at all so long as I was treated fairly. I would not have done well at all in a sexist school (one where only girls were exempt from CP) because I would have been treated unfairly from day one and constantly thereafter.
I’m convinced exclusion would have caused me infinitely more harm than CP did.
I have little doubt I would have been suspended (and probably expelled) from a sexist school. The unfairness itself would have made my behaviour a lot worse and punishments such as lines of detentions wouldn’t have worked because I simply wouldn’t have done them. I was no certainly angel as it was but, if you consider the things I was caned for, I wasn’t anything like as bad as I could have been.