I think it necessary for student to wear the same school uniforms.Firstly,wearing the school uniform is able to make students have a good attitude towards study life.In addition,in order to attract others' attention,students will spend more money to purcher beautiful clothes,which will bring parents heavy burtden .What's worse,schools can't form a perfect eniveroment.As is the saying goes,every coin has two sides.We must recognize thenegative and positive effects of wearing school uniform.