Someone is truly in here going 
The hundreds of people gunned down daily is really a small percentage of the population so it's all just scaremongering. Several dozen people are upvoting it. I think I'm done with hexbear for a bit. Thanks for the fun posts, everyone
Being a child is criminalized. And the children are suffering. The point of childhood anymore doesn't seem to enjoy some innocence and learn life lessons and make mistakes in a loving or caring environment where you're shielded from most of the consequences. The purpose of childhood is to mold you into an ideal member of the proletariat. And to never ever misbehave, because the Eye in the Sky (whether that's your parents or the police state) is always watching and you'd better get used to it.
I've talked about the atrocious state of childrens' rights in this country, and had some really good discussion here about it. It's only getting worse. Don't walk or bike home from school, wait for your parent to come get you in an SUV. Don't go skateboarding, you hooligan. Don't hang out with friends or other kids in the neighborhood with only the admonition of being back before dark. Don't drink a beer, even as an adult- you'll go to jail. Don't host a party, you'll go to jail. Don't have awkward teenage sex. Don't go hang out downtown or explore the woods, you'll be raped and abducted and sold into slavery! Just stay home, on your phone where it's safe.
I fucking hate this. This shit honestly makes me despair more than climate change. I'm not sure why that is, obviously what we're doing to the climate could well spell the end of human civilization. I think I'm just really upset at this very clear, yet less dramatic impact of living in a fascist society. Being a child is criminalized.
There's a couple of factors I've heard.
One is a fear that if kids were fleeing they'd be easier targets for a gunman positioned outside. A shooter would have long sightlines with many targets.
Second, that the chaos of a general evacuation would make it much harder to locate the shooter, increase the number of targets the shooter has at any given moment, and make an armed police response (lol) much more difficult and dangerous. If there's no one moving in the halls except the shooter the armed response team is less likely to accidentally shoot an innocent person, will be more likely to have a clean shot on the shooter, the shooter won't be able to hide behind people running around, the shooter will be easier to find without a crowd to look through.
As we've seen; Emergency response is slow and often ineffective. Cops, who would probably be the people our society would insist on sending to rescue victims, are cowards with contempt for human life and everyone around them and often refuse to risk their life to help others.
If there were emergency exits kids would be going in and out of them a lot.
Every emergency exit would need to be maintained and kept in good repair. A couple of school shootings have happened at schools where external doors were locked and the door was either propped open for failed to lock correctly, allowing ingress for the shooter.
One is that, with some basic equipment, a classroom can be made very difficult to break in to. There are some systems that put a square hole a few inches deep in a recess near the bottom of the door. If you drop a metal post in that recess the door becomes effectively impossible to open without a fire axe or breaching gear. Since all commercial and residential doors are required to open inwards to facilitate escaping from fires or disasters it's a fairly reliable, reasonably inexpensive way to fortify a room.
To some extent the problems with fortifying a school can be related to the problems of fortifying airports post 9/11 - Nothing the TSA does has made air travel safer or prevented airline terrorism. The only change made post 9/11 that has actually improved airline safety and resistance to hijackings is putting locks on the cockpit door so there is no practical way for an attacker to get in to the cockpit and seize control of the plane.
For schools, I'm not clear if any of the interventions taken since Columbine have done anything but cause additional harm, but if there are any useful ones it would be very simple things like door wedges and door blocks, rather than turning schools even more in to prisons