Eleven high school students will be referred to Police Youth Aid after a brawl outside a Mangere KFC last month.
Police said they had identified and interviewed a number of students involved in the fight, with help from their schools, witness accounts and cellphone footage.
Four teenagers were arrested shortly after the incident.
They included two 17-year-olds who were charged with disorderly behaviour, with one of them also facing charges of possession of a knife and possession of an offensive weapon.
Police said a small key group of students and their families would be helping them to prevent a repeat of the incident.