Just my opinion but
There’s a difference between precaution and paranoia. The odds of your child being involved in any way in a school shooting are slim. If you’re that paranoid about it you better keep them in a padded room their entire lives. Damn sure better never let them ride in a car on the interstate or play on an old school playground.
Reminds me of the animated movie The Croods (set in the caveman era). Overprotective father kept the family huddled in a secure cave their entire lives. At one point the daughter stands up and says “This isn’t LIVING, it’s just “not dying”. Big difference.
Father of 3 public school children BTW. 6th grade through kindergarten this year. (Getting shot at school is among the least of my worries with them. Far more likely they’ll do something stupid and hurt themselves lol).