My question: Who is harmed, and in what way, by a child having that particular hairstyle, or any other hairstyle?
Answer: .... tumbleweed ...
Bluntly, this hairstyle is extreme through my middle-class lens and I think the schools aren't doing the kids any favours by seeing them off to employment, interviews etc without some kind of guidance. It's one of the subtle (actually, this is not terribly subtle) indicators that lock working class boys out of entire industries.
Aim to change the game, find, but don't pretend the rules don't exist.
You can argue that this isn't the schools place, or that the punishment is disproportionate, but I agree with what I assume the intent to be.
TipTop - thanks for answering my question about harm caused by this hairstyle. Your position is that the boy himself is being harmed, because having a short back and sides may lead to his losing out on job interviews etc.
Hmm... this position is another way of saying that this is a "chavvy" hairstyle.
I agree that schools should provide children with guidance about how to present themselves for job interviews etc, but as this boy is only 11 or 12 he has plenty of time before getting to that stage. By the time he's leaving school short back and side might no longer be fashionable/chavvy/extreme < take your pick.
It increasingly seems that children whose appearance doesn't accord with middle class sensibilities must be kept out of sight.