A study was conducted to investigate the relationship between student participation in classroom discussion and the way these students rate their instructors. The general hypothesis of this research was that student participation in classroom discussion is rewarding and that it reinforces favorable attitudes toward the instructor. A total of 480 undergraduates rated their instructors. These 18 instructors identified high and low participants, and instructors were rated as high and low facilitators of discussion by expert observers. No difference in teacher ratings between high and low participants was found, but instructors who were rated as high facilitators by experts were also rated higher by students. (Author/KM)