The Tai Tokerau Principals' Association president has called for agencies across Whangarei to come together and come up with five actions to end violence in the city.
Pat Newman said he sees more dysfunctional children coming into school across Northland and wants agencies to devise ways to end the violence, in schools and on the streets.
"It's time all the agencies and departments come together and decide on five things we can put in to action to address this," he said.
Mr Newman, principal of Hora Hora School, said he believes children displaying violent behaviour in schools need to be helped at school and at home.
Meanwhile, Whangarei and Kaipara Area Commander Inspector Tracy Phillips said half the crimes committed in the area were youth related and that most violence offences happened in the CBD and with a small radius of licensed premises.