Some teachers are scared to break up schoolyard fights in case they're charged with assault.

Latest statistics show a rising tide of violence in schools, with almost two students on average now being expelled for it every week.

The Education Act doesn't specifically allow teachers to use restraint.

And Secondary Principals' Association's Patrick Walsh said that needs to change.

"There's a heightened degree of sensitivity when you consider the Vulnerable Children Act and physical violence against children that teachers are worried that if they use excessive force they may potentially be liable."