Two teenagers have been taken to hospital after a stabbing at Wickman Way in Mangere at 3.45pm today.
An ambulance spokesman said two patients had been taken to Middlemore Hospital.
One of them, aged in his late teens, had a serious stab wound to the neck, and the other patienthad sustained minor injuries.
Neither injury was thought to be life-threatening.
Police are currently at the intersection of Wickman way and Chelburn Crescent in Mangere following the incident involving students from Southern Cross Campus, a Year 1-13 school.
Owner of Wickman Way Pricecutter, Jagjit Janjua, said from his grocery store opposite the school gate that he could see crowds of kids leave the school and rush to a nearby carpark.
He said it looked like the whole school was following the fight. He knew something was wrong when a teacher asked him to call police.
"We saw them all go up the road and my wife called police and ambulance."