I'm up in the air on this one. By itself, we all know these are pretty much useless for sheltering in place. It's like just having a shield in a battle with swords. Eventually, the guy will get to you. I can see some benefits for using it to get the heck out of dodge, but that is not the procedure for most schools. Now, where this will be amazingly effective are the schools where teachers can be armed. Now you're getting to a serious combination of defense and offense. That's portable cover and you can't beat that. I can't see how you hold them, but if there are elastic straps on the back you could use it something like a shield on your forearm. It might break a bone, but big deal. You can use it like a small riot shield and shoot around it with your strong hand.