A Sheffield mum of a pupil at the city school where there was a recent attack has launched a petition calling for standard lockdown alarms and drills in all schools.
Sheffield mums call for school lockdown drills after attack at city school yorkshirepost.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from yorkshirepost.co.uk Daily Mail and Mail on Sunday newspapers.