The only solution that will have any effect at all is to fortify schools and other soft targets, PWK.
Your idea is great, but it does not go far enough. We need more than several in each school.
I’d say a team armed and visible at all times backed up by plain clothes running electronic security and carrying concealed.
They need to be there all day, every day for the rest of time.
Now is the time for such security companies to form, and they should not be union, because unions will strike leaving the schools exposed to attack.
Furthermore, schools need to change their architecture. They need to be physically harder. Doors need to be solid steel and locked down except when classes are changing.
Front doors need to be locked down as well as all exits and entrances. Fences need to be erected around the property and those fences need to be secured and guarded at all times.
May sound extreme, but it’s not as extreme as a bunch of dead kids and vulture politicians trying to consume civil liberties as a result.
How long before the Gubmint uses those guns to keep parents away and children IN?
Slippery slope
“May sound extreme, but it’s not as extreme as a bunch of dead kids and vulture politicians trying to consume civil liberties as a result.”
Satire or psychosis?
If you want school shootings to stop, do as the Israeli’s do - arm teachers. It worked there as not one school shooting occurred since teachers and older students were armed.