In my option, the students need to wear the casual clothes to school.
First, the casual clothes will make the students feel comfortable, with the smooth of material (e.g. : cotton, elastic,...)
Second, they will give the students freedom of choice. It's size, color, fashion, etc...
Next, the favorite clothes can give the student the self-confident when the students wear them. Students won't be inferiority because of the uncomfortable of clothes.
Finally, the school can be more colorful and lively with the casual clothes.
To conclude, the school should agree the students to wear the casual clothes.
