My guess is that there was more than just the fact he said “bro.” Cadence, tone, those things are important, too. In my school, kids were taught not to open the door for anyone, including cops. We were told it’d take hours to secure the building so that cops and first responders would be able to get to us if we sheltered in place (SIP), and they’d have keys. In fact, we were told not to open the door for a student–a nightmare scenario–as it could let in the shooter (who might well be a student)
SIP is not the default plan in most schools. Students are supposed to evacuate if it’s at all safe to do so. You only SIP if it’s not. SIP is, ironically, a major factor in why those kids in the Columbine HS library were killed. Though there was an exit that led directly outdoors, the protocol was shelter in place, so kids were told to get under tables.
Most schools today use some variation of ALICE training, which encourages evacuation and communication and emphasizes that SIP is only recommended if there’s no safe exit.
My classroom was the closest to the main entrance, so a likely first hit. The admin only ran violent intruder drills once every 1-2 years. The school cop* approved my plan and provided pointers. My door was always locked and usually closed. (Doors only locked from the outside, so I’d have had to go into the hall to lock it during a shooting incident. The door could, of course still be opened from inside.) That alone would help deter shooters who, cops said, usually look for high kill rate opportunities and assume they have only minutes to act. They’re unlikely to waste time on a locked door. Unlike the movies, it takes time and effort to shoot off a lock, cops said.
I had a first-floor classroom. I trained my students to climb on the counter, open the window, and jump out. (While there could be a shooter outside–1998 Jonesboro, 2018 Parkland–I was told that odds are students are safer outside the building.
The cop said chaos, as in kids running around or throwing things, makes for inaccurate shooting. Were an intruder in the room and exit impossible, kids were supposed to throw their shoes or other items. This is very hard to do when you’re getting shot at–the instinct is to run (also a distraction) or hide.
I’m not a big fan of concealed carry for teachers. It could be helpful if your students had no escape and you had even a little lead time, but remember, the chaos that distracts a shooter distracts the teacher as well. In my school, the 2 CC teachers were supposed to leave their classes and find the shooter. Holy crap. In a crisis situation, how do you tell if that’s a kid with a cell phone 75 yards from you or a shooter with a gun?
I kept a can of wasp spray in my desk. It shot 12-15 feet. Could I have reached it in time? Maaaybe, if my room wasn’t the first one hit. I told the kids to pay no attention to what happened to me. I figured I’d be killed or incapacitated while trying to engage the shooter. Because my instinct would also be to hide or run, I mentally rehearsed once per week in the hope it’d stick with me when I needed it. I’m deeply grateful I never did.
•There was one school cop for the entire district (7 schools), so the cop was rarely in our building.