Despite a history of conflicting research on the reliability and validity of student evaluation of faculty (SEF) it has typically not been viewed as an infringement on academic freedom. When it is suggested that SEF may impinge on academic freedom, it is often considered an attack on either student rights, or on the process of evaluating faculty performance in general. Faculty and educational administrator views and surveys are reviewed as SEF is used in salary, promotion and tenure decisions. It is suggested that the literature shows that SEF infringe on instructional responsibilities of faculty by providing a control mechanism over curricular, course content, grading, and teaching methodology. It is further suggested that SEF play a significant role in current attacks on tenure, and that its role in a demographically diverse 21st century educational system has changed from its benign historical origins. It is concluded that contrary to current views, SEF is a serious unrecognized 2 of 32 infringement on academic freedom. .......... Despite the long line of research on the validity of SEF it has not typically been viewed as impinging upon academic freedom. At first glance, the very notion seems counterintuitive, if not downright mean spirited. Indeed, when it is suggested, it is seen as not only a novel idea, but as an attack on either students, or a general attack on evaluating faculty. In fact, one recent handbook for college administrators, (Weeks, 1996) refers to such an idea as "a rather novel attack on the use of student evaluations in assessing a faculty member's performance." Indeed, it has generally been taken for granted that SEF is appropriate and necessary. Unlike the body of research on the methodology of SEF construction and the validity of the ratings, there is a paucity of data on the issue of its impact on academic freedom. .......... The likely reasons for this paucity of data are that (1) there has been little professional mention of SEF as an infringement on academic freedom, (2) some faculty are embarrassed to admit that student evaluations may influence their professional behavior in the classroom, (3), to question the right of students to evaluate faculty may be considered unprofessional if not undemocratic, (4) to question the right of students to evaluate faculty may be seen as self serving, and (5)SEF tends not to be high status research. Finally when SEF is recognized to have an impact, unlike traditional threats to tenure and academic freedom, the deceptive appearance of SEF does not seem to warrant serious concern. .......... In a recent and otherwise carefully reasoned book on academic freedom (Menand, 1996), the issue of SEF is not mentioned.2 At best, the subject of SEF has been the orphan in discussions on academic freedom with no direct logical lineage. At worse, it has been considered illegitimate. There are signs, however, indicating wider faculty recognition of this issue. As administrative policy, the use of SEF has largely evolved in a de facto manner, this pape...