Once again, it pays to be pretty .
Not only do more-attractive teachers get better evals, it seems their students pay closer attention and learn more:
Participants listened to an audio lecture while viewing a photograph of instructor. The photograph depicted either a physically attractive instructor or a less attractive instructor. Following the lecture, participants completed a forced choice recognition task covering material from the lecture. Consistent with the predictions; attractive instructors were associated with more learning.
 and male; an "unexpected" finding of the study was that the male instructors received better ratings than the female instructors, although the students' performance on the recall test did not differ by instructor gender.