Put guns in the schools and you eliminate the soft target. No one holds up gun stores, police stations, or anywhere they know they will meet opposition.
The allure of a target rich environment with no chance of anyone else shooting back will be history!
Points of entry and metal detectors are best. A secure system can be created at these schools. Gun's could play a roll, but maybe not as heavy a role that you might imagine.
You cannot control points of entry to a school any more than you can have two gates for an NFL stadium! It's stupid and every one of you nimrods need to catch a clue!
Ever notice that there are no metal detectors in large venues anymore? Because they are pieces of shit!
I went into the VA office one day and it took them at least three minutes to determine I was NOT carry a gun because:
1) the buttons on my jacket were metal, so each sleeve and the front alarmed.
2) my belt buckle was metal, so it alarmed.
3) the fly in my pants alarmed
4) both of my shoes alarmed from the metal in them
5) my tie tack alarmed and it was smaller than a penny!
It was a good thing that there wasn't a line of people behind me!
Now, repeat that about 3000 times for kids carrying backpacks with metal zippers, metal in pens and pencils, spiral notebooks, metal baseball bats for practice, etc.
Heck, our archery teams carry their bows and arrows to class with them each day, and they are locked up during the day!