This study examined the following predictors of academic success for 4,113 Asian American students and 1,000 White students who enrolled as freshmen on any of the eight University of California campuses during fall 1984: (1) high school grade point average (GPA); (2) Scholastic Aptitude Test (SAT)--verbal score; (3) SAT--mathematical score; (4) English Composition Test score; and (5) Level I or Level II Mathematics Test score. These predictors were measured against the following variables: (1) ethnicity; (2) major; (3) language spoken; and (4) gender. Among the findings were the following: (1) high school GPA and SAT or Achievement Test scores can, to a moderate degree, predict university freshman grades of Asian American and White students; (2) for both Asian Americans and Whites, the best single predictor is the high school GPA; (3) for Asian American students, but not for White students, mathematics scores are a better predictor than are verbal scores--this ethnic difference persisted regardless of academic major or English proficiency; (4) no major sex differences were found; (5) the various Asian American groups showed some differences in the regression equations; and (6) the White regression equation underpredicted the performance of Chinese, other Asians, and Asian Americans who said that English was not their best language, and overpredicted those of Filipinos, Japanese, and Asian Americans for whom English was the best language. Data are presented on 13 tables. A 37-item list of references is included. (BJV)