How many female math, science or engineering teachers (high school) or professors (college) did you have in school. Well, I'd wager not many. That's because womean still earn a smaller percentage of the new PhDs in these fields than do men. More women are joining the academic ranks, but the rate of growth is still rather slow. Check out the Scientific American article Why Aren't More Women Tenured Science Professors? to read more about it and wiegh in on the topic.