Oh my favourite subject...I believe all school children should be allowed individuality with their hair as long as they keep it brushed/combed, clean, tied back if and when necessary.
Many boys will find their hair thinning in their mid-20's, so their choice of hair styles diminishes anyway - how lovely that they can look back at photos in their teens and before and see what wonderful styles they once had.
After all, we've moved on from 'short back and sides' or 'pudding bowl' styles haven't we.
I believe in school uniform, it gives an almost level playing field (in most cases
) but then they do all look the same, their only distinguishing feature to make them into individuals is surely their own choice of hair style which they can change according to their wishes or fads or fashions (or with a bit of cajoling from parents if the situation requires it
As soon as a boy or girl has to wear any form of school uniform I am more than happy to let them have their own choice of hair style - (conforming to health and safety rules in school) and wear it however they like once they are at home.
Off the soap box - and off to try and get a life