Students at Te Kuiti High School, where former student Ocean Heke attended, were visibly shaken this morning.
Students were crying and holding each other for support following a school assembly this morning.
Te Kuiti High School deputy principal Ripeka Price said the teen had been a good student who was supportive of her peers.
"I have read her last school report and it is exactly what her teachers have to say about Ocean and how I remember her, as a kind, loyal and supportive friend to her peers.
"When she faced difficulties with her studies she always sought help from her teachers."
Ms Price said the teen left the school at the end of 2014, moving to Hamilton with family.
"She again did very well at Fraser High School. Then she returned to family in Te Kuiti and rejoined our school briefly in 2015.
"She then chose a vocational pathway, I believe in the interest of sports."
Ocean, known to friends and family as Lovey, was a member of the school's waka ama team. The team are set to perform in the national championships in Rotorua in the coming days.
Ms Price said a number of the group would be grieving for the loss of Ocean but they "know the kaupapa of fulfilling the obligations to the team and will do it for Ocean".