"We tell our kids to get under a desk, be quiet and cross their fingers when we should be training the kids on things like evacuating and barricading," said Amanda Klinger of the nonprofit Educator's School Safety Network.

"There could be a wall of windows in the back of the classroom, and a teacher is instructed to make her kids lie down when they could be evacuating out the windows," Dr. Amy Klinger said. "A teacher shouldn't get in trouble for helping his or her students survive."

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