I think we collectively answered our own question.
By all means, do legitimate honest non-biased research and see in schools what the percentages are in your scenarios A and B, before we spend 40 billion dollars.
Okay, using data to guide policy is good.
the pro gun people would probably argue that the stats are off.
Whoops, you’re right. The same argument/stalemate would happen with or without data supporting one side. But if the data supported armed guards, I guess the anti-data side wouldn’t mind, so it would still do something.