We have to stop the attacks on our schools. All the other "solutions" being debated will take a lot of time to implement and will probably be of little help.
But we can immediately secure our schools by providing armed guards ready to stop the bad guys before they do much damage, and while waiting for police to arrive, which is always too late.
The only thing that will stop a bad guy with a gun is a good guy with a gun. And we can do that right now.