Schools are thinking of introducing photo IDs for teachers.
It follows the sentencing of convicted sex offender Te Rito Miki yesterday to four years in jail.
He managed to get jobs at six North Island schools, using a false CV and birth certificate.
Secondary Principals' Association president Patrick Walsh says the sentence sends a strong message.
"To other would be offenders, particularly those with a sexual history past working in schools, we hope it will act as a deterrent to them."