A new survey of students at the co-located Shirley Boys' and Avonside Girls' schools show many are being sexually harassed and assaulted.
Fewer than half the boys took part in the survey, but of those who did: a fifth reported harassment - dominated by physical assaults including touching, groping, and even sex without consent.
The incidents happened at school and the victims were most likely homo- or bisexual.
Meanwhile, in the girls' survey, a total of 21 instances of rape or near-rape are described amid widespread reported sexual harassment.
The head students of the Avonside Girls' Olivia Kingi and Shirley Boys' Kururangi Wetini spoke to Charlotte Cook.