Well "SusanAndKen" do you have a single shred of evidence to support that theory? Because if not I don't buy it. 2-3 generations ago boys could make a very good living in the trades, as mechanics etc. Especially compared to faculty salaries back then. But boys well outnumbered girls in university entrance. 
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As to wage discrimination - there isn't any. When all other factors are taken into account men and women get paid the same for doing the same work. The single largest employer in the country is the federal government. You may wish to note that there is no landslide of discrimination claims against the government - as there surely would be if there were any significant amount of discrimination. The same holds true for other employers.
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Please stop making things up just to try and excuse the systemic discrimination against boys that is now built into the educational system. You too Ambrose99. Sexism is ugly - even when it is boys who are being discriminated against.