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The timing could not have been much worse for an exclusive Christchurch girls' school invaded by naked pranksters yesterday.
The schoolboys decided to bare all running through various schools in the city before their antics backfired and they were tracked down by police and arrested.
The four pranksters, aged 17 and 18, will appear in court next week to face charges of offensive behaviour.
At St Margaret's College, the streaking occurred in front of staff from the Education Review Office (ERO), who were there to conduct the school's three-yearly review, and a visiting group of parents.
Executive principal Gillian Simpson was left to hastily explain that this was not the norm, and the pranksters "are not ours. We usually have guards on at the gates at the end of the year, and they would have been if they were a week later."
St Margaret's is no stranger to the phenomenon.
Two years ago, 12 of its girls faced disciplinary measures after an attempted dash through a boys' college in their underwear. United Future leader Peter Dunne leaped to the girls' defence at the time, saying the school was being "prissy and proper".