In fall 1988, Mt. San Antonio College undertook a study to determine the effect of prerequisite waivers on students' academic progress. Two groups who received waivers in the fall 1987 and spring 1988 semesters were selected for the study. Group I included 222 students who applied for and received waivers both semesters. Group II was comprised of 122 students who used waivers to take classes other than English as prerequisites for English classes. The two groups were granted 847 waivers, including 381 in English, 238 in mathematics, and 210 in American language. Study findings included the following: (1) at the end of fall 1987, Group I had completed 67% of the classes they had attempted with a "C" or above, compared with the college-wide successful class completion rate of 56.6%; (2) in both fall 1987 and spring 1988, the highest number of course withdrawals were from math classes; (3) 68% of Group II successfully completed their English classes with a "C" grade or better both semesters; and (4) transcript analyses of the unsuccessful students in Group II showed a clear pattern of previous class withdrawals, low grades, academic probation, and dismissal. The results of the study clearly established waivers as an integral part of the matriculation process. The leading indicators of a student's ability to achieve success after being granted a waiver were previous grade point average, and withdrawal and course completion patterns. (AJL)