@sozobe,
authors found a negative effect of uniforms on student academic achievement
-----------------------------------------------------------------------------------------
It all depends on how questions are asked.
A couple of years ago a test in Scandinavia((?) or Germany(?) where we don“t have uniforms was made.
As there were no school uniforms the children in one class were asked to wear the same clothing. I think it was blue jeans, white poloshirts and a darkblue sweater. The class teacher also dressed like this.
It turned out that the kids felt much more as equals, there was less noice in
the classroom and the learning results were better.