Although much research exists on adolescent marijuana use, few studies have examined marijuana use in school settings. Students experiencing academic and social difficulties at school, such as those receiving special education services, may be more at risk for school-related substance use. Nevertheless, virtually no research has examined this problem. This study assessed the prevalence of marijuana use at school and the perceived availability and consequences of using marijuana in school among students with learning disabilities. The results showed that 15 percent of students reported using marijuana at school, and that marijuana was easily obtained. Most students perceived marijuana to be harmful to their schoolwork, and many non-users felt unsafe and angry when drugs were present at school. (Contains 2 tables.)