Well, whether or not IQ correlates to intelligence, we do know that males tend to have greater variance in IQ while females tend to be more clustered around the

Well, whether or not IQ correlates to intelligence, we do know that males tend to have greater variance in IQ while females tend to be more clustered around the mean - while also having a higher mean IQ. If IQ correlates to academic success (which I believe studies have shown it does) then this would lead one to reasonably conclude there should be more female undergraduates and graduate students, and an equal number (or possibly slightly more) male assistant professors; we'd also expect a greater proportion of full professors who are male. This is in fact what is observed. I'm not a biological determinist, and it's certainly possible the IQ test itself is sexist/ not unbiased, but this is one possible explanation where we can observe what we do without the presence of sexism. It's also certainly possible there IS sexism preventing women from becoming professsors, I'd just need to see more compelling evidence than what's presented here.