This report updates information on trends in the participation of Hispanics, American Indians, Asian Americans, and African Americans in colleges and universities. Included are data concerning high school completion rates, college participation rates, undergraduate and graduate enrollments, and degree completion. Because the Hispanic population is the fastest growing of any other racial or ethnic group in the United States, yet educational attainment is the lowest, a special section focuses on the social, demographic, and educational attainment data for Hispanics. The report outlines the critical nature of the problem and identifies areas for future research and policy development. Statistical data concerning enrollments, high school completion rates, and degree attainment by race, age, gender, and ethnic group comprise 50 percent of the report. Among the findings are the following: (1) Hispanic high school completion rates and grades continue to be among the poorest of all groups studied; (2) African Americans and Hispanics made little progress in achieving parity with Whites in college participation during the latter half of the 1980s; (3) from 1986 to 1988, minority gains in college enrollments (7.2%) outpaced gains in total enrollment (4.3%), with Hispanics and Asian Americans leading other ethnic groups; and (4) African-Americans and Hispanics persist in college at considerably lower rates than other groups. (GLR)