Violence in schools will be reported to police under a strict new regime.
The secondary schools union has instructed its member teachers to report all serious assaults directly to police from this week.
President of the union Robin Duff told the Herald on Sunday the national directive would focus on violence against teachers but schools could not prioritise reporting violence against teachers over violence between students.
Teachers had been expected to accept a level of violence at work that would be unacceptable anywhere else, he said. "Our guide is, would you report it if it happened on the street?"
Pressure to protect the reputation of a school had put people at risk, he said. "We hope if all schools report serious violence there is less likelihood of individual schools being singled out."