With school ball season in full swing, Rotorua police are encouraging parents and party hosts to be aware of their responsibilities if they host a before or after ball party.
Western Heights High School's ball is on tonight, with Rotorua Boys' High School's next Saturday and Rotorua Girls' High School's on October 7. John Paul College and Rotorua Lakes High School have already had their 2017 balls.
Rotorua police area prevention manager Inspector Stuart Nightingale said balls often came with before or after parties and parents and hosts should be fully aware of their responsibilities before agreeing to host such a party.
"In general terms, after-ball parties are often poorly supervised and fraught with significant risk."
Mr Nightingale said there had been recent changes to the Sale and Supply of Alcohol Act all party hosts needed to be aware of.