Sarcasm and frustration duly noted. I feel it too.
I'm leaning toward measures to restrict guns in homes with mentally challenged persons of all ages, but it's a slippery slope where government determines "mentally challenged." ATF Form 4473, the gun dealer transfer form asks in question 11f, "Have you ever been adjudicated mentally defective (which includes having been adjudicated incompetent to manage your own affairs) or have you ever been committed to a mental institution?" Expand this to include "or anyone residing with you?" Maybe. But the CT boy, it seems, was never "adjudicated."
A better solution? Perhaps relocate all schools into movie theaters showing "The Hobbit."