“Threat assessment management is a very powerful tool that pulls from all aspects of a student's life — teachers, coaches, parents and others in the community — and uses trained teams to connect the dots,” Klinger said.

“For the same cost of a single door buzzer, we can train five threat assessment teams. We've heard of shootings, suicides, fights, all kinds of things that have been prevented,” she said.

You can read the full article here: http://triblive.com/news/westmoreland/5919429-74/security-detectors-metal#axzz2z1QmAu7N