Concerns about safety in urban schools has led many school districts to require uniforms for their students. However, we know very little about what impact school uniforms have had on the educational environment. In this paper we use a unique dataset to assess how uniform adoption affects student achievement and behavior in a large urban school district in the southwest. Since each school in the district could decide independently about whether or not to adopt uniforms, we are able to use variation across schools and over time to identify the effects of uniforms. Using student and school fixed-effects along with school-specific linear time trends to address selection of students and schools into uniform adoption, we find that uniforms had little impact on student outcomes in elementary grades but provided modest improvements in language scores and attendance rates in middle and high school grades. These effects appear to be concentrated in female students.
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Paper provided by Department of Economics, University of Houston in its series Working Papers with number
2009-03.