Case of the long hair

A year 12 boy named Lucan Battison was suspended from his school because he refused to cut his hair which his principal wanted him to do. Lucan's family challenged the school and took it to the hight court in Wellington New Zealand. The judge decided to go in Lucan's favour and Lucan is now aloud to continue to go to school with his long hair, plus the school had to pay his court cost. In my opinion I think that the principal was very wrong because why would you stop somebody from learning due to the fact that a boy has long hair. It does not matter if a boy has long hair as long as they are learning, I mean I would understand if he got suspended because he platted his hair or did something like that with his hair while it was time to learn.