It is good to wear school uniform to school because people can easily identify the pupils to the school. In a cases where a student behaves badly they can be reported back to the school easily. Uniform also helps pupils who come from a poor family fit in as they will be no need for the 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
Students wouldn't be discriminated because of the clothes they wear. Uniforms help pupils get into the correct, working state of mind, and it gives a good impression of the school.