This causal-comparative study examined the relationship of school uniforms to attendance, academic achievement, and discipline referral rates, using data collected from two high schools in rural southwest Georgia county school systems, one with a uniforms program and one without a uniforms program. After accounting for race and students with disabilities status, School A (with uniforms) had significantly better attendance and somewhat fewer minor behavior infractions, but trended lower in standardized math scores and more intermediate and major behavioral infractions than School B (without uniforms). These findings failed to demonstrate an unambiguous advantage of school uniforms, consistent with the mixed results across reports in the published literature. Implications and suggestions for further research are detailed.