School systems nationwide rely on high-level expertise from the U.S. Secret Service and others as they work to stay vigilant for signs of potential student violence, training staff, surveilling social media and urging others to tip them off
Security protocols leave threat responses up to schools kaaltv.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from kaaltv.com Daily Mail and Mail on Sunday newspapers.