I think, it does not matter to have uniform regulation or not. Uniform does makes students look unique, and order, however, it is only something outside. I have heard someone says that with out uniform, students will dress up and compete with each other, I do not agree. Anyway, my opinion is, I was forced to dress uniform when I was in the university for the reason that was not educationally reasonable, and I did not like it.
Social value is totally different.
If students want to have sex or do drug, they will do it no matter what they wear uniform or not, some just do with uniform. I think that they have a problem because they free the students too moct. I don't know about your school. But in mine there is a problem. They have to make a rule about clothes.