Among the recommendations of the "Nation at Risk" report (1983) was that a core curriculum of four units of English, three each of science, social studies, and mathematics, and a half unit of computer science be required. Between 1982 and 1992 the percentage of high school graduates earning the recommended units in core courses increased sharply, from 13 to 47 percent, an increase that occurred for both sexes and for all racial and ethnic groups. For private school graduates, the number rose to 66%. Over the same period, the percentage of graduates completing the recommended credits in core courses increased more for students whose parents had only completed high school than for students whose parents had completed college effectively closing the gap between the two groups. One table and two graphs summarize this information by gender, race and ethnicity, urbanicity, type of school, and parental education level. (SLD)