When my daughters were in school none of the area school districts had uniforms, except a few private schools.
I always wanted them to level things out financially and to stop the distractions of "style" (or so they thought!) How can the boys pay attention to the teachers when the girls have their "all" in the shop windows to admire! If there is a fire the boys with their pants around their knees will burn up as they can't possibly run that way!
I was in school and graduated in the US in 1971. Ours was the last grade NOT allowed to wear trousers or jeans. I got sent home to re-dress when I wore a mini-skirt length culotte that actually "covered" things better than the matching skirt that went with the outfit. So rules can be oddly irregular. But there was NO way back then that the girls were allowed to dress like street walkers and the boys like clowns!
OK, now everyone knows I'm an old fogy, but there it is. Without standards and discipline school is just anarchy! Who can learn in a state of anarchy??? OK, off Soap Box Now!!!
Leslie