Actually, that is not what I said to her. She respects the rules of the school and does not wear the chain. I am showing her that one can make a difference by logically addressing an issue.
Quite frankly, I have devoted my life to changing the whole judging a book by it's cover thing.
It's nice conceptually to think that can be changed. But having hired people when I worked for myself, I can tell you that anyone working for me represented ME... not themselves. They were a reflection of ME and MY BUSINESS and represented me to the outside world. And I'm no different from anyone else who will consider hiring your daughter. And that includes the schools she's going to attend and everything else.
Given that, the book by its cover thing is pretty much here to stay. So you can spend your life fighting it, or find a style within it that doesn't reek of fighting authority mindlessly.