A study of educational attainment of adults (25 years old and over) in the United States (by ethnic origin) shows a wide range among the ethnic groups. The following is a breakdown of the main national lineage of the 106.3 million respondents: German, 12.8 million; English, 12.0 million; Irish, 8.6 million; Italian, 4.7 million; Polish, 2.8 million; Mexican, 1.9 million; and Russian 1.6 million. In general, most groups were similar to the national average in terms of number of years of schooling. Among all adults in the United States in November 1969, some 55% had completed at least 4 years of high school. However, the proportion of high school graduates among persons of Russian origin was about 69%. The proportion of high school graduates among persons of Mexican origin was considerably lower--about 24% had completed 4 years of high school or more. Among all adults, 21% had completed 1 or more years of college; among those of Russian origin, about 35% had this much education; and among persons of Mexican origin, 6% had completed some years of college. Additionally, about 11% of all adults in the United States had completed 4 or more years of college, as compared with 23% of those of Russian origin and 2% of those of Mexican origin. (LS)