Ask teachers from non-uniform school: hours wasted explaining to kids then parents that cropped tops, leggings, slogan tshirt, ripped trousers, tracksuit bottoms, rainbow hair, heavy jewelry... are not suitable for school
Why are these things not suitable for school?
Rainbow hair, slogan T-shirts, leggings, ripped trousers, tracksuit bottoms - all totally acceptable at my kids' schools. These are very highly rated schools that get great results and have very few behavioural problems.
Having green hair doesn't stop kids from being smart or learning well. Leggings are comfortable. So are tracksuit bottoms. Ripped trousers - so what? Why do you need to look smart to learn?
You need to dress smart for exams in your final year anyway, so that's another expense.
You do? Why? Does being dressed smartly somehow make you write better?