When I was in high school (Class of '01) I was in NJROTC, on the drill team. We drilled with de-mil'ed M1s. Not just demilitarized, mind you - that wasn't good enough for the school board. The actions were welded shut, and the barrels were filled with cement. Those were some heavy damned rifles.
When Columbine happened, the administration came up with a "code red" policy, which went something like this: If you're in a class room, close and lock the door (classroom doors opened outward, and only locked from the outside) and don't let anyone in. However, if you're in the hallway, you're supposed to get in the nearest classroom.
Does anyone see a problem with this?
Well, me and my friends did. So we decided to do something about it. I got some maps of the school (7 or 8 copies to be exact) from the desk in the office. Made up maps for each period, and me and some of my friends would be responsible for a different sector of the building depending on where we were at the time. Was it young and naive? Sure. Would we have been effective in stopping any sort of threat? Doubtful. But were we doing something? We were doing a damned sight more than the people "in charge", we knew that much.
The Vice Principal caught wind of it (someone saw me color-coding a map of the school, got concerned) and came to talk to me. "Where did you get maps of the school?" "Uh, Mr. Bull (his name, I swear, and it was appropriate), they're in a big stack right out there on the desk." This stopped him for a minute. "Well, why do you have these?" I was candid, showed him the different maps, and explained to him that I thought the "code red" plan they had instituted was useless, and my friends and I thought a pro-active approach was better. He looked at me and said "OK, I can understand that. Just don't let people see it, you don't want to scare them." And left it at that. Go figure.
I guess what I'm trying to say is what other people have said: A lot of it depends on the administration, and teachers. Remember: crap rolls downhill. Glad to see that you've introduced another young shooter.