Marijuana use on college campuses is commonplace both as regards experimentation and frequent use. In attempting to understand factors contributing to this phenomenon which flies in the face of legal America, researchers have examined various aspects of parental influence including parental consumption of legal and illegal drugs and their attitudes toward such use by their offspring. Because such parental use and attitudes as they related to student introduction to, and current use of, marijuana have been reported both sparingly and separately, this study was undertaken. Significant relationships at the .01 level were found between perceived parental attitudes toward youthful use of alcohol and marijuana, and the frequency of student marijuana use; between perceived parental attitudes toward cigarettes, marijuana and alcohol, and the time of student introduction to marijuana; betwen perceived parental use of painkillers and the frequency of marijuana use; between perceived parental use of barbiturates, marijuana, painkillers and antidepressants, and the time of student introduction to marijuana. (Author)