What you libtard nincompoops fail to understand and address, regarding these school shootings is how the one size fits all lowered standards education system is the root problem.
Liberal/socialist cultural mandates have brought us to this sad place of troubled students ignored by the education system lash out in terrible violent tantrums.

Ask yourself if these school shootings took place before 1913 when Woodrow Wilson began his socialist social doctrines? Before government co-opted the education system. (back then every 12 year old had his little 22 rifle to shoot targets and squirrels, back then you could mail order the firearm from Sear Robuck, and there were no school shootings!)
You gotta ask yourself; what's changed?
It has only gotten worse as government exercises more and more oversight into education.
Only seeing firearms as the issue and the problem is horribly naive and myopic.
Sadly current liberal education doesn't teach you to ask these questions.
In the mean time until the education system is overhauled pistol packing teachers might well be the near term answer.