New guidelines around how teachers can search students have been issued to schools today.
The surrender and retention guidelines are billed as a guide to help schools "correctly interpret" new powers which came into force last month.
"The powers were put in law in direct response to what the sector said it needed in this area, said Education Ministry spokeswoman Katrina Casey.
"The guidelines aren't in addition to the law. They are a practical guide to help schools correctly interpret the law."
The ministry would be watching closely to see how the new rules and additional guidelines were working, she said.