This story from the National Post is a gem: Yelling at boys in an educational setting is not a bad thing. It is, in the end, nothing that a father (or a mother) hasnt known, yet when such opinions are delivered at a major conference of the National Association of Independent Schools, it makes news. The crux is this (but do read the whole):
"...boys prefer education in a classroom setting that is louder, competitive and more rule-governed than that preferred by girls. Boys often respond well in a more formal, almost militaristic climate, where teachers call students by their last names; girls typically do not do well in that kind of setting, and would actually do better in a setting where both they and their teacher are allies, talking to each other on a first-name basis, rather than adversaries."