Teachers at an Aberdeen school are being balloted for industrial action over what a union has described as violence against staff.
The Educational Institute of Scotland (EIS) said there were serious concerns over the safety of staff at Northfield Academy.
The union said violence or the threat of violence was unacceptable, and that not enough was being done.
Aberdeen City Council said it was "disappointed" at news of the ballot.
The local authority said work had been undertaken to address concerns in recent months.
Balloting in an individual school on such an issue is regarded as very unusual.
