Schools in Toronto, Canada have been doing "lockdown" drills for a while, but those usually assume that there's something dangerous outside the school. (I've se

Schools in Toronto, Canada have been doing "lockdown" drills for a while, but those usually assume that there's something dangerous outside the school. (I've seen the lockdown procedures invoked a few times when there has been some serious crime in the close vicinity of school). These drills mostly consist of "lock doors and avoid line-of-sight from outside". It sounds more mild than the "active shooter" scenario drills described in this article.