A lot of you are missing a really important point.
It's not about this one kid.
Lots of schools have dress codes which the parents are well informed of prior to children starting school. There may be uniforms and restrictions on personal appearance.
If you don't like that there are other options.
You don't have to send your kids to public school.
I'm ASS uming they knew the rules and chose to disregaurd them.
This is something with which I have some personal experience.
This is also why I have NO sympathy for them and think that they, the ones who violated the rules they agreed to abide by and are now making their child face the consequences of their greedy actions, are wrong.
If you want to go in swinging, something with which I also have some familiarity, it's not cool to use your kid as your weapon.