School shootings: Can clear backpacks keep kids safe? Expert weighs in.

U.S. schools districts are once again searching for methods to prevent school shootings.

In response to such incidents, districts are requiring students to use clear backpacks so school officials can see inside, though there is some debate about the effectiveness. "Even though a backpack’s clear, things can still be hidden in it. If you really want to know what’s in those clear backpacks … you’ve still got to do a search."  "We can create a false sense of security if we're not careful."

Mo Canady, the executive director of the National Association of School Resource Officers, told Fox News that clear backpacks alone aren’t necessarily going to solve all schools' problems. 

"It would depend on what other practices are in place," Canady told Fox. "Just because a backpack's clear doesn't mean something can't be hidden. "Policymakers have got to be really careful about not unintentionally ... creating kind of a false sense of security."