Uniforms

Why do we have to wear uniforms, thats the question that we all want to know. Unfortunately I also don't know like many of you. But I think it is because the school wants to look formal and smart. But actually theres a gang that hangs around somewhere in the 60 streets that wears the same color clothes as us. Either were pretty cool or that gang is not a very good one. But based on all of this why don't they just tell us why or tell us why this and this work. They never tell us anything. Or why they would change our school colors as a gang.