Prior research suggests that attitudes may be one category of personal (student) variables that students bring to the task of evaluating college courses and their instructors. In a previous study, attitudes toward college teaching, in general, and the perceived progessivism of instructors, in particular, were associated with students' evaluations of courses. Perceived attitudes were a kind of evaluation. The results of the study raised the question as to when the attitude evaluation relation was first formed in the course of a semester and whether a causal order between them could be established. The present study, using a repeated-measures design, replicated the major findings of the previous study on a cross-section of University of Haifa students attending 22 courses. While there is no clear evidence for the priority of either attitudes or evaluation, the findings indicate that their association is formed early in the course, with some further consolidation later on. Both attitudes and evaluations are remarkably stable during the course. In view of these findings it is suggested that classroom evaluations might be moved back to one of the first meetings of the course to allow for feedback and changes in the instructor's presentation. Moreover, perceived attitude measures could be developed into an indirect measure of teacher performance.