In regards to school being bias against boys, my theory is that what if one of the contributing factor that there are few male teachers simply because it's a low paying job. Most jobs dealing with people are relatively low paying: nursing, speech therapy and teaching, which are typically dominated by women. With the influx of women entering the work force, men will move into higher paying jobs to rise up to the demand of women wanting providers. As the result, boys suffer because of this. Back in the day, when there plenty of housewives, it might not have mattered too much, male teachers can still be successful as providers while at same time it acted as a natural barrier to prevent too many women entering teaching.

Just a thought I had.