Kids shouldn't have to wear uniforms. All it does is make school a dull and lifeless place that no one wants to be in. Students should be able to express their feelings and emotions by wearing regular clothes. I'm a kid myself, and actually, I couldn't care less about them.
Some kids may not run as fast as other kids or might not be as strong, and they may become embarrassed. If obese children know they are obese, they should already be signing up for P.E., but kids who are embarrassed will feel like they were different from the fast kids. That separation may lead to not enough self-confidence and eating more.
They can get in touch when necessary:
The main benefit of having a phone is that you can get in touch with your parents whenever you need to.
This allows your parents to feel you are safe and they will know that thier son will call them when he has a problem.