Here's an argument I've used when pitching it. The argument is well-received, but hasn't been able to yet be made to the people that can make it happen.
What is the likelihood of a person catching on fire in his lifetime, compared with the likelihood of finding an unattended firearm? Most would agree that the latter is far more likely.
And every child in America knows "stop, drop, and roll."
Why shouldn't they know "stop, don't touch, leave the area, tell a responsible adult?"
The Eddie Eagle program will save hundreds of lives, and no guns need to be brought into the classroom to teach it!