The National Association of Schoolmasters Union of Women Teachers has issued a 10-point plan to protect staff against violence and pressed Michael Forsyth, the Scottish Secretary, to set up a working party.
Tino Ferri, national executive member for Scotland, urged Mr Forsyth to follow the lead of Gil-lian Shephard, Education Secretary south of the border, and establish a group, with representation from all the teacher unions, to discuss measures to counter the general decline in pupil behaviour.
The union, which claims 1,800 members in Scotland, calls for police and security guards to be on hand at potential flashpoints, for staff to be given personal panic alarms and for schools to install closed circuit cameras.
It particularly wants local authorities and headteachers to listen to calls for support from classroom teachers and says disruptive pupils should forfeit their right to mainstream education.
The Educational Institute of Scotland and the Scottish Secondary Teachers' Association have raised similar concerns about staff protection.