Pros
There are many upsides to wearing school uniforms. For example, school uniforms would be easier than to create and enforce a dress code for independently chosen clothing. Also, the interest in fashion and fad combined with peer pressure can lead to spending that some families can't afford. Another reason for school uniforms is that crimes involving stealing of apparel are unlikely if everyone dresses the same. One big reason for school uniforms is that kids social standing would be based more on the individual character and less on their economic status.
Cons
There are also some downsides to wearing school uniforms. For example, uniforms interfere with student's rights for self expression. Also, uniforms are an unnecessary expense, and may result in an economic hardship themselves. And, school uniforms have no use outside of school. Another reason why schools chose not to require uniforms, is that the wearing of uniforms may give students the impression that conformity is the way to prevent conflict, and this is not an appropriate message for schools to send.
My Opinion
I think school uniforms are a great idea, and they would benefit both the schools and the students. One of the biggest reasons I would like school uniforms is because I would not have to wake up as early to get ready. I wake up at 6:00 every day, and I know most people get up even earlier, and uniforms would allow students to get more sleep, which helps students focus more in school. Another reason for thinking this is bullying. I have seen many bullying incidents, caused by clothing. I, myself have been bullied because of clothes. I think that school uniforms would help prevent bullying, and help the students who can't afford trendy clothing.