Research evaluating student ratingsofprofessorsrevealscontinuedcontroversy. Interpretations of student ratings of professors in terms of face validity are marred by halo affects, the apparent inability of even skilled raters to judge complex behaviors adequately, the salience of personality features in judging tasks, and a host of other variables. Research shows student ratings to be reliable, but design flaws for simple, first order, predictions usually omit the teacher as a cause. Interpretations of research are confusing because of justifications that indiscriminately involve nomological and applied models. Rating scale peculiarities, questionable validity, and scholastic homogeneity lead to diverse professional attitudes towards student opinions of professors, with a learner or consumer emphasis occupying the extremes. Several evaluation schemes are noted along with behaviors that tend to produce favorable student opinions.Interest in students evaluating professors in order to improve teaching has a long history and began early in American education (Boyce, 1915). The idea is based on the belief that students, because of their exposure to professors, should know best whether teaching is adequate and whether they are learning.The implementation of the idea is simplicity itself. A set of questions is constructed, questions that refer to the professor's clarity of speech, organization, involvement in student learning, presentation of different viewpoints, fairness in grading, work assignments, and other characteristics. The students are given these questions near the end of the semester, but before the final examination, and they anonymously rate the professor. The ratings are then analysed, related to some performance index, and the professor is, ipso facto, evaluated.The program is so simple, straightforward, and appealing that rating techniques have been developed and used at a number of colleges and universities (Centra, 1979). The ratings are used in selecting professors for salary increases, promotions, and tenure, and are sometimes published for the benefit of the students in course selection. Although student ratings are only one part of evaluation programs and separate fromchairperson evaluations, faculty peer ratings, informal student opinions, and other traditional methods of evaluations, they deserve special attention because of their widespread use and possible misinterpretatio m After three-quarters of a century, controversy still exists over interpretations and use of student ratings (Cohen, 1983;Dowell and Neal, 1983;Dunkin and Barnes, 1986;Murray, 1980). Diversity of opinion ranges from "Teacher evalu-