Students have a gender bias against female science teachers

Physorg.com - Gender bias found in student ratings of high school science teachers

College freshmen who had just began their studies were asked to reflect on their high-school science courses in this relatively large study across 63 different colleges and universities. Despite relatively equal teaching ability between male and female science teachers, male physics teachers were rated as more effective than female physics teachers by both male and female students. In the case of chemistry and biology, female teachers were rated as less effective by male students, but relatively equally by female students. Overall then there was a negative bias against female science teachers by students. The theory is that students are internalizing a negative cultural stereotype about a woman's place in science despite having evidence to the contrary.