The National Rifle Association has proposed setting armed guards at all schools and supplying NRA volunteers to help. Concepts surrounding the arming and training of teachers have been suggested. Putting in safety glass and locking doors from the inside of schools has failed before.
Let's go all the way to the top and just put God back into our schools. We would have a fight in Congress, and many secularists would oppose an increase of God in a public place. Yet in courts of law and public monuments, the Ten Commandments are displayed.
If you cannot trust in a God who answers prayers of faith, what can you believe in? Congress?