I've just skimmed through this (most of it's too hard for me) but in case no-one else has, I thought I'd mention that, in the UK, the public school-leaving exams were always marked with a bias towards boys (in other words, boys gained marks because they were boys), and that way, boys were shown to perform better than girls.

Like cats do, this eventually got out of the bag, and a fairer system of marking had to be introduced. Since then, girls' results have always improved more than boys'. (It is an inviolable "natural law" in UK that pupils' results improve year after year after year, no matter how low standards must drop to achieve this.)

And now, there are more female undergraduates at university than there are males.

I don't know how the balance of sexes within the population affects this outcome, but I do think the "feminisation" of the British education system has had a lot to do with it, and I know that a few boys now suffer at the hands of misandric teachers, just as many girls suffered at the hands of misogynistic ones before, but it cannot be denied that, in the UK at least, girls seem to have greater academic intellect than boys do.