In response to the Drug-Free Schools and Communities Act of 1986, a national study of alcohol use on college campuses was undertaken from 1989 to 1991. The study used the Core Alcohol and Drug Survey which was administered to students at 56 four-year institutions and at 22 two-year institutions for a total student count of 58,625. Analysis of the data produced findings such as the following: (1) alcohol, tobacco, and marijuana (in that order) were the most widely used drugs on campuses; (2) 5 times as many males as females consumed 21 or more drinks per week; (3) in four-year institutions, 1 in 10 students consumed 16 or more drinks per week; (4) overall, more than one-third of the students preferred an alcohol-free environment and 87 percent preferred a drug-free environment; (5) more students at two-year institutions used cocaine than students at four-year institutions; (6) at both two- and four-year institutions, the heaviest drinkers obtained the lowest grades, especially among male students at four-year institutions; and (7) twice as many males as females reported binge drinking three or four times over a two-week period. Appendices include the survey questionnaire and validity and reliability measures. (GLR)