There are several reasons to explain why teenagers shouldn't be allowed to wear their own clothes at school. Instead, they are supposed to wear school uniforms.
First of all, uniforms help the school look smart. The students feel that they belong to a special group. When every student in the school wears the uniform, 1will have to worry about fashion. Secondly, For students, the school uniform will remind them that their task for the six or seven hours they are in school is to get 2instead of expressing their individuality（个性）. Third, uniforms can be useful in unexpected ways. A school in Ireland has introduced an interesting new uniform. On the jacket, there is a piece of cloth that 3light in the dark.
When the children are walking or cycling to school on dark mornings, car drivers can 4see them. Finally, school uniforms can help improve school grades. Though the answer to this question is not clear and yet one study in America found that students' grades improved a little after the school introduced uniforms. School uniforms are 5in Britain. Some schools want to stop the tradition, but now students of about 90 percent of schools still wear uniforms. For these reasons, it's no surprise that school uniforms are becoming more and more popular across the world.
