Not sure what inequality you're talking about, given that the US population is right at a 50/50 split between men and women. Then again, I'm not sure how genuine you're being here.
I'm pretty sure that the numbers are even more skewed now. They are even more skewed at the elementary level, of course, just like the teacher numbers.
And of course, the persistent retirement gender gap (men and women retire at the same age and are expected to contribute as if they lived the same lifespans, but women live considerably longer).