The principal Youth Court judge is asking school boards of trustees to try to keep every child actively involved in education, before resorting to expelling or excluding troubled students.
Speaking at a board of trustees (BOT) conference over the weekend, Judge Andrew Becroft called for BOTs to think very carefully about the effects of the expulsion and exclusion of students.
"We know that about 35 per cent, we think, of young offenders before the youth court aren't at school - the research is clear that better than psychological intervention, better than counselling, better than most things is attendance at school," he told Radio New Zealand.
Participation and being engaged was a huge protective factor, he said.
He acknowledged that schools are now much better than they were 10 years ago.