Religeous Persecution or Disuptive Behaviour
From Metro.co.uk: Student punished for spaghetti beliefs
Okay, once you stop giggling, think about it. His teachers are completely right. Seriously, a kid sits in class in full pirate costume, and when his teacher tells him to change he says, "It's my religion!"
Boot his ass. His Noodly Goodness knows I'm all for a joke, and personally, I would let him wear it for one day. But the article says, "repeated refusal" to stop. Which indicates several days to me and his teacher was no longer laughing.
And you know, it would be different if his school was one of those who were trying to teach Intelligent Design alongside evolution, because then it would be an act of protest. The article doesn't mention if it was, but I suspect not.
That makes him a smart ass.
RAmen.