Data on the achievement of 9-, 13-, and 17-year-old Hispanos in school in the areas of social studies, science, mathematics, career and occupational development (COD), and reading were collected between fall of 1971 and spring of 1975. Results were examined in relation to the achievement levels of students in the nation as a whole and those of black and white students. Representing a cross-section of typical schools across the country, the sample consisted of 75,000 students, of which about 2,500 answered a given question. Results were reported by age, region (Northeast and West), sex, and level of parental education. Among the results were: Hispanic achievement was consistently below that of the total national age population and of white students; Hispanic achievement was often closer to national levels than black achievement; the achievement of male Hispanos was consistently closer to national levels than that of females on the science items; and students who reported that one parent had at least graduated from high school was closer to the national level than those who reported that neither parent had graduated. Appended are: definitions of national assessment Hispanic-reporting categories, special analyses of reading items, statistics of the achievement of the white and black groups in each area; and proportion of Hispanic students within the national assessment samples. (NQ) Primary type of information provided by report: Results (Race).