The purpose of this study was to investigate message T-shirts and school safety as rated by high school teachers (n = 47) and students (n = 275). Wearing message T-shirts displaying offensive statements/images may contribute to perceptions of a psychologically and/or physically unsafe school environment. Participants gave their impressions of 12 message T-shirts. Teachers rated 11 of 12 message T-shirts as more offensive than students did. Students rated 9 of 12 message T-shirts as more humorous than teachers did. As ratings of offensiveness increased, ratings of safety decreased. The findings may inform efforts to enhance school safety and teachers' and students' perception of the school environment. (Contains 6 tables.)