Just on that page, three different women talk about how they enjoyed seeing boys caned at school; how some girls would create conditions to get a boy caned; and how “Girls could get away with truanting, being rude to teachers and even stealing. But boys were caned for almost anything.”
Of course, no girl at my school would dare attempt to get a boy wrongly caned, the risk to herself was too great, but it’s something I’ve heard many times from women who attended sexist schools.
I think part of the reason CP of girls attracts so much interest is its rarity value. I have no doubt other factors are involved too though. The “rare” is always more interesting than the “everyday”.