In fall 1986, Mt. San Antonio College (MSAC) initiated a 5-year longitudinal study of the effectiveness of its matriculation services, including assessment, orientation, counseling/advisement, and follow-up. The academic performance and success of students participating in one or more of these services were compared to those of degree- and certificate-seeking students who did not participate in matriculation beyond admissions services. This report provides matriculation information on eight cohorts of students who entered MSAC in the following semesters: fall 1986 (Group 1), spring 1987 (Group 2), fall 1987 (Group 3), spring 1988 (Group 4), fall 1988 (Group 5), spring 1989 (Group 6), fall 1989 (Group 7), and spring 1990 (Group 8). Specifically, the report provides summaries of student progress data for Groups 1 through 8; updated comparisons of the retention rates, grade point averages (GPA's), and degrees or certificates earned by matriculated versus non-matriculated students in groups 1 through 6; detailed profiles of Groups 7 and 8; and comparisons of GPA and percent of units completed by gender and ethnicity for Groups 7 and 8. Highlighted findings include the following: (1) among all eight cohorts, the majority of matriculated Asian, Hispanic, and White students had higher GPA's than non-matriculated students; (2) for all but one cohort, matriculated students had higher persistence rates and greater percentages of units completed than non-matriculated students; and (3) matriculated students earned significantly more degrees and certificates than non-matriculated students. Extensive data tables and bar graphs are included. (JMC)