Which fact best supports the author’s position? On average, school uniforms cost $150 a year, which is much less than the average spent on back-to-school clothes. Parents have the right to exempt their children from wearing school uniforms, but they must meet with an administrator to discuss the issue. In 1994, a school district in California implemented a school uniform policy in grades K-8, which affected more than 60,000 students. To assist schools in establishing a uniform policy, the US Department of Education has created an online manual.