This booklet presents data on years of schooling completed by individuals in the United States who are 14 years old and older. Data are based on the results of the Current Population Survey (CPS) conducted by the Bureau of the Census in March 1978 and 1979. Data are presented in tabular and narrative form. Characteristics considered in the survey included age, sex, race, Spanish origin, type of residence, region of residence, and occupation. Findings indicated that 68 percent of persons 25 years old and older were high school graduates in March 1979; the proportions of persons who completed at least one year of college and four or more years of college were greater for men than women in 1979; the proportion of persons who were high school graduates increased more for blacks than for whites--although white youths were still more likely than black youths to be high school graduates as of 1979; people residing in metropolitan areas were more likely to be either high school graduates or college graduates in 1979 than those living in nonmetropolitan areas; the West consistently has had the largest proportion of adults who were either high school or college graduates; the educational level of the American worker has increased substantially throughout the years; and the proportion of male laborers who were high school graduates increased dramatically since 1960. The document concludes with appendices which present information on definitions, explanations, sources of the data, and reliability of the estimates. (DB)