I get that the behaviour needs to be addressed but we've been using school uniforms as a weapon for far too long - it pisses parents off, maybe that doesn't matter to schools who like to talk about partnership but don't listen they wear you down. I've seen at one primary swimming googles forbidden for swimming unless you have a note to say you are allergic to chlorine - (which all the parents lie about because their kids won't swim without them and countless parents tried to address this with the school but they don't listen), to the next school - googles are essential for swimming and if you don't have the full kit you can't swim (although this school will provide them and all the other kit so the kids whose parent can't be arsed providing the kit don't feel left out)). Both these schools attend the same swim school. Rules and more fucking rules about stuff that doesn't matter yet schools get so bloody obsessed with, suspend kids for having their hair cut a millimetre too short for wearing nail polish for having 2 earrings in one ear.
Do schools in other countries obsess over petty rules - I get the feeling they don't. These petty rules piss parents off - instead of focusing on the stuff that matters by the time you have dealt with all the petty shit - your tolerance for the important stuff, when it happens has also been diminished.
And I'll say it again for those at the back - my kids were well-behaved, academic and wore all the right bloody uniform and according to their teachers a joy to teach but by the time they left school I was ecstatic to escape too! Schools are exhausting.
Focus on the stuff that matters hasn't really caught on in schools, they want it all and more.
So if you think parents are the problem - have a look at why.