This report reviews issues and previous empirical studies surrounding prediction of educational attainment, preparation for college, college aptitude assessment, and prediction of achievement in college for Hispanic students residing in the United States. First, a demographic overview of Hispanics, concentrating on population size, ethnic subgroup identity, age, economic welfare, language background, and educational attainment, is provided. The findings of recent major studies on Hispanics' learning achievement during high school are then reviewed. Following this, data compiled by the American College Testing Program, the College Entrance Examination Board, and the Graduate Record Examination Board, for college admissions of Hispanic students are analyzed and contrasted with those of nonethnic minority examinees. Then, studies evaluating the prediction of undergraduate Hispanics' college grades and college admissions test scores are discussed, as are studies done on Puerto Rican students by the College Board Puerto Rico office. Finally, issues underlying improvement in the prediction of Hispanics' college grades and other measures of college success are synthesized for use in predicting either Hispanic students' college aptitude or college achievement. Suggestions are made for improving: (1) understanding of Hispanics' preparation for college; (2) understanding of how the college admissions process operates for Hispanic candidates; and (3) understanding of Hispanics' college experiences that affect their college achievement and the prediction of this achievement. (Author/AOS)