I'm not saying the intentions were necessarily bad, just outlining how past perspectives and actions lead to the outcomes we are now observing.
And the notion that boys are being set up to fail, especially by the school system is just ridiculous. In this day and age, students can post their questions and answers online. Any bias in grading can be quickly found out and if the issue is as broad and systemic as you are claiming then this will be incredibly trivial to prove. There would be millions of students complaining.