I'm with Kirk on the uniform bit being there to make children more equal in their clothing. I went to a private grammar school (on a scholarship) and my biggest dread of the year was non uniform day., so much do that I would often not attend that day. Being very aware of the lack of designer labels in my wardrobe against the other girls was, for a teenage girl, the ultimate embarrassment. I also got in trouble for piercings which I had to cover with plasters...all annoying but it was very much one rule for all thankfully. I'm not sure about hairstyles though....I was ginger so always stood out in a crowd anyway