Te Haumia Warren has faced up to bullies without becoming a bully himself.
Te Haumia, 17, a final-year student at Edgewater College, was bullied by another boy in his first year at primary school.
"He just pushed me a lot," he says.
One day, his father, Daniel Warren, saw the boy knock Te Haumia to the ground. But instead of arguing with the other boy or his family, Daniel arranged for his son to learn a form of kung fu.
The next time Te Haumia was bullied, in his third or fourth year of primary school, he knew how to defend himself.