One of our local school districts is adopting the A.L.I.C.E. training model. I've read as much as I can and watched the videos. It makes a helluva lot more sense than anything else out there. The only thing that would make more sense would be to let me actually carry a weapon that I might be able use to defend my students.
To a much greater extent than most mechanical devices, firearms are terribly unforgiving of any overconfidence, complacency or negligence.