An interesting article in the Washington Post mentions a study by a local professor (local for me).
[Thomas] Dee says his research supports his point, that gender matters when it comes to learning. Specifically, as he describes it, having a teacher of the opposite sex hurts a student’s academic progress. … For example, with a female teacher, boys were more likely to be seen as disruptive. Girls were less likely to be considered inattentive or disorderly.
I find this interesting – mostly because it was not true for my education. I can remember more male teachers who made an impact on me and my education than female – in fact I can think of more female teachers who made no impact on me than male. The problem with studies like this is that they are based on generalizations – and can give people the wrong idea.