As we know only Israel has effective screening for Airline travel - their screeners and policies actually work and they'd better. There is real danger if they don't.
So-o, ask yourself what would Israel do to effect a real, logical and 'safe' school zone protecting children against gun violence, using their skill in logic and 'what works'?
1. They'd have firearm classes in grades 7 and above (at least), teach children to use, recognize, operate, disassemble and understand firearms. They'd talk about safety, how to seek cover, how to remain calm and they'd have 'gun in the school' drills. (at least in all new school construction)
2. They'd install 'safe-room' aspects and self-locking doors in all class rooms with bullet proof laminate doors, so that even if something started they could do an auto-lockdown and isolate the shooters and protect the children behind substantial walls resistant to all small arms fire.
3. They'd have armed guards at the entrances
4. They'd have bullet resistant outwear for the children - they make that now-days in the form of jackets or raincoats.
5. They'd have metal detectors in each entrance with double-doors to prevent someone from slipping by.
6. They'd have designated teachers who are armed (CC, probably) in each zone/floor who would be trained in defensive use.
So, given that in the US we have NONE of these measures, I have to conclude that legislators ARE NOT SERIOUS ABOUT PREVENTING GUN VIOLENCE/DEATH of school children. They're just PRETENDING. The real agenda is to disarm the average peaceful and armed citizen and CREATE A CLIMATE OF FEAR.
I'll end this diatribe by reminding folks of the utterly useless, pointless and deceptive practice in the 50s and 60s of having kids get under their flimsy wooded desks to protect them against nuclear detonation and fall out. Everyone involved in setting up these drills knew this was a ridiculous and pointless exercise, yet they made us do them, knowing all the while it was a sham.