When I taught in the states the dress codes did say things about hair cuts etc. Parents complained to high heaven, people just want everything their own way.
When I worked in the corporate world, dress codes said things about hair cuts, facial hair ( for example men had to grow beards on time off if they wanted one) formality of dress etc. Strangely enough most people complied and those that didn't comply got the sack.
I've already agreed up thread that uniform doesn't need to be enforced in such a draconian way as it has been in some places, but that in most places it actually does some good.
As stated previously, uniform for the moment is not going anywhere schools, the government etc all endorse it. Most teachers just do as they are told by SLT in enforcing it, the vast majority of us just get on with teaching. A dress code would be whinged about on here too, in fact schools and teachers appear to be the whipping posts of the website which saddens me greatly, and if that is what people think of the profession that I have given so much time and effort to I'm utterly speechless. The vitriol expressed by many posters is awful, I have tried to persuade myself that its just keyboard warriors, but actually I see it more and more in society too. Everything mutst go "my way" all the time, and if I don't like something it has to change and hang everyone elses opinion. Mumsnet is not a collective its a bunch of entitled idiots shouting at each other.
To which end, I'm done, with it all, I've been thinking about it for weeks. I used to like the debate, but no longer.