We interviewed professors from various university disciplines in Québec to garner their opinions on Student evaluation of teaching. A global analysis of the results revealed that, in general, a majority of professors indicate that evaluation helps them to improve their teaching and that student comments are an interesting source of ideas, even if some of them qualify this particular section as an opportunity to “let off steam.” They also consider that students should evaluate all professors, without exception. Furthermore, they state that the evaluation instruments are reasonably well designed, though they recommend sweeping changes. But do professors across different disciplines react in the same way to evaluation made by their students? We present a comparative analysis of the results from health science, science, social science, administrative, applied science, and other sectors.