i think that school uniform be compulsory because usually Thai people wear uniforms when we go to kindergarten until university. So it's important from Thai people who when to school. I think that uniforms makes students feel like they are part of the school, and it should be proud to belong to the school. Students wouldn't be discriminated because of the clothes they wear. Uniform also help students who come from a poor family in as they will be no need for parents to buy expensive clothes. It's also easy to wear early in the morning as there will no need to pick and choose clothes from the wardrobe. And sit there to half an hour trying to decide which of clothes would be best to wear in order to impress others at school. Absolutely you would have to skip breakfast on the morning. Then imagine if you went to school and found that others thought your shirt was untidy. And teacher saw your shirt will be reproach to you. Especially uniforms help students get into the correct, working state of mind and it gives a good impression of the school.