I've had some random thoughts concerning implementations to counter this current dilemma of school violence. These are odd ideas, to be sure, but we're countering odd behavior, also.
I've been wondering about fire alarms. Currently, as seen in Parkland, anyone can pull an alarm and cause a mass exodus. I'm wondering if there could be a way to electronically verify a fire, it's location (in case someone triggers an alarm with an actual fire), and even eliminate the fire prior to an evacuation. In other words, make it very difficult to force an evacuation of a school building, but at the same time, allow for immediate evacuation when necessary.
I'm also wondering how prepared modern students' brains are for violent emergencies. I'm comparing modern students to students from when I was young, or even prior time periods.
Many, if not most, of today's students do not eat a brain healthy diet of fruits, vegetables, and whole grains. Could we counter that by offering free lunches with little or no meat, and attractive, tasty vegetarian dishes? I would even suggest making it more palatable with a bit of sugar or honey; as Mary Poppins said, "A spoonful of sugar helps the medicine go down." Even cookies, cakes, puddings, etc. can be upped nutritiously.
Something we're already struggling to improve, so I don't know how we can improve on this more than we are, but kids today are not reading. Nothing supports brain growth as much as reading (and other forms of communication). Roald Dahl, in Charlie and the Chocolate Factory, recommended eliminating TV's. This was prior to video games and texting so perhaps he would have even furthered his suggestion had he written the book in 2018. I'm not suggesting total elimination of such technology, but I am suggesting, (beyond our control as teachers), that parents monitor tech usage and encourage activities that enhance the upper brain rather than just growing the reactive lower brain. Not only does reading enhance empathetic understanding and logical thinking (of which many if not all of the current violent students lacked), but it produces a brain that can better respond to an emergency situation. In reference to the police training we received at our school, standard procedures were set in place, but alongside of that, we were cautioned of the need to be creative. My thoughts are this: in an emergency students might become devoid of teacher direction and might need to react on their own. A better prepared brain provides better reactions.
Also concerning brain development, again somewhat out of our control except for what we currently provide, students need more physical exercise and more time outside. When I was a kid, playtime meant outdoors. Of course back then, it was considered safe to explore the entire neighborhood including the wooded areas.
Back to communication, and this is within our area of outreach, oral communication is essential for brain development, and again, this enhances the areas of the brain that will respond creatively and interact socially during an emergency; by interacting socially, I'm thinking of situations where students, again if devoid of teacher presence, may need to work together in solving a crisis. In the classroom, this is developed through discussions where everyone (including the teacher) listens to each other, everyone is respectfully encouraged to participate, everyone is allowed to disagree (politely), everyone is allowed to change their opinion following further exploration of a topic, in other words, good, healthy talks--appropriate for any subject, such as how can this math formula be used in everyday life? Should ain't be considered improper grammar since at one time it wasn't? What would have happened if this historical even had not occurred?...etc.
Just some thoughts.