This document discusses the debate around school uniforms that has occurred over the past 20 years in the United States. It outlines the timeline of key events and perspectives from both supporters and opponents of school uniform policies. Supporters argue that uniforms can decrease violence and increase safety, discipline, and academic achievement. However, opponents claim there is little data to support these claims and that uniform policies may infringe on students' freedom of expression. The debate considers research studies that have shown mixed or inconclusive results on the impacts of school uniforms.