Before fall 2006, Lamar maintained a dress code allowing for students to wear most types of clothing. Starting in the 2006–2007 school year, the school requires school uniforms. Uniforms consist of monogrammed navy or white Lamar polo shirts and khaki bottoms. All shoe types are permitted, including flip-flops; female students are allowed to wear plaid skirts. The Texas Education Agency specifies that the parents and/or guardians of students zoned to a school with uniforms may apply for a waiver to opt out of the uniform policy so their children do not have to wear the uniform; parents must specify "bona fide" reasons, such as religious reasons or philosophical objections. Alice Davidson, a Lamar student who wrote the "Screaming in the Halls" column in the "Yo! Houston" section of the "Houston Chronicle", said that the Lamar uniform is similar to that of the St. John's School.