What prompts a school to ban something is usually, I would imagine, a matter of being fed up with a distraction, a noise or a bad look. Or at least it should be.
We should be long past the days of societal and prejudiced bans, when books such as Catcher in the Rye were pulled from school shelves for being unsuitable, or Harry Potter being banned because of the elements of sorcery.
I can't quite fathom Motueka High School's ban on puffer jackets, although I admit they aren't a great look. There is something a bit gangster, a bit hoodlum about puffer jackets. I concede I could be sailing foul of parents who have just forked out some serious money for one - and they are warm, I'm sure.
Right now, with the snow resting solidly on the Tararua Ranges, warmth is important, and it would seem, judging by the jackets I see in Wairarapa, puffer jackets are not an issue for schools. Still, it is the school's right to have a uniform code.
Back in the day distracting items at schools included towel-cracking, Chatter-rings (a steel hoop with brass ringlets which spun and vibrated) and the first generation of virtual pets, called Tamagochi. Those moderately inoffensive "pets", in little hand-held devices, needed feeding. The arrival of Tamagochi prompted my mother, a school principal at the time, to declare any Tamagochi found at school would be confiscated and placed in her drawer until they "died".