I agree, they do perform better this way (girls and boys). However, there is no demand in STEM, especially for women. If you must lure girls with “We need you” pleas into the most brutal of careers they wouldn’t have otherwise chosen (anti-liberal, ironically) and they find out you’re lying say, as soon as they graduate, you’ll be making an enemy for life. They can vote, remember. It is met by overseas workers, who are cheaper and can be threatened to work harder with deportation (and take less hours off for sickness and holidays). You must choose, neoliberals: immigrants (usually male) or native women. Choose you must.