The Police Minister says police have acted appropriately in looking into another Roastbusters-type case.

It follows reports a group of school boys were let off with warnings after they got girls drunk, performed lewd acts on them, and then posted photos of the activities in a Facebook group.

LISTEN: Sarah Maindonald from New Zealand Association of Counsellors speaks with Tim Wilson

Police Minister Michael Woodhouse said he's sought assurances from police that the matter had been adequately addressed.

"I got that assurance, I also got an assurance that the person who had brought this to police's attention was satisfied with their actions in that regard and I got that assurance as well."

Meanwhile police and school principals have met to discuss the latest surge of "Roastbusters" like behaviour.

Sarah Maindonald from the Association of Counsellors said recent studies have shown children as young as 11 and 12 are sending sexually explicit content.

She said it's about modelling good behaviour and respect at every level - including parents, teachers, and even in Parliament.

"I think we need to have good programmes involved so that all students, boys and girls, can learn to relate respectfully to each other," Maindonald said.

"I believe in restorative justice so that people actually learn when they've made mistakes."