Do grades increase once students are required to wear school uniforms?

Studies on the effect of school uniforms on grades have yielded mixed results. Some studies show a small, positive correlation between uniform policies and improved grades, particularly in schools with pre-existing discipline problems. The argument is that uniforms create a more disciplined and focused learning environment by reducing distractions related to clothing choices and peer pressure.

However, many other studies have found no significant impact on academic performance. The effect, if any, is often small and may be attributed to other factors, such as changes in school climate or the overall improvement in school discipline that may accompany the introduction of a uniform policy. It's crucial to consider that correlation does not equal causation; improved grades might be due to other initiatives implemented concurrently with the uniform policy.

In short, there's no conclusive evidence that requiring school uniforms *directly* and significantly increases grades. While some studies suggest a slight positive effect, it's not a guaranteed outcome and other factors likely play a more significant role.