Second thing, school uniforms had no effect on substance use, behavioral problems, attendance, and academic achievement. Thus, it does not mean that you can have a positive influence on studying if you wear school uniforms. Even if students do not wear school uniforms, their studies will not be affected. People who want students to wear school uniforms are worried about children spending too much time and money on clothes and therefore getting their studies distracted. However, they do not have to worry about such things. To begin with, students might spend a bit more time changing clothes, but this happens only during the morning and right after dismissal. Students do not change clothes while they are studying at school, so there is no reason for their studies to be distracted. Also, about the money, school uniforms are expensive as well.