This report presents findings of the Center for Equal Opportunity's investigation of undergraduate admissions at the University of California, San Diego (UCSD). It describes the racial and ethnic composition of UCSD applicants, admittees, rejectees, and enrollees, and the racial and ethnic differences in Scholastic Assessment Test (SAT) and high school grade point averages (GPAs) for these groups. The report also provides a detailed summary of the procedures used to generate these results. The analysis and report focus on African Americans, Hispanic Americans, Asian Americans, and Whites, but statistical comparisons were not made with American Indian/Native Alaskan applicants. In 1995, 39% of applicants were Asian Americans, 44% were White, 13% were Hispanic American, and 3% were African American. The racial and ethnic composition of admitted students and of rejected students was similar to that of the profile for applicants. The racial and ethnic composition of enrollees was similar to that of applicants. In 1995, proportionately fewer African American applicants were accepted than Hispanic, Asian, or White applicants. There are two virtually distinct populations of enrollees at UCSD as measured by SAT mathematics scores, with African Americans and Hispanics on one hand and Whites and Asian Americans on the other. There are few overlapping scores between these groups. Verbal SAT scores show more overlap than mathematics scores. The different racial and ethnic groups were almost alike on high school GPA. A look at the graduation rates in previous years indicates that Hispanic and Black students are less likely to graduate in 5 years. It is believed that this difference reflects differences in preparation for college. Results support the view that UCSD weighs grades above test scores in determining admission, and demonstrate the existence of racial preferences in admission, even though students given preference are less likely to graduate in 5 years. (Contains eight figures.) (SLD)