[SydneyK]

I know the question pertains more to teachers of primary/secondary education, but I'll chime in here. As a college professor, while I've had a handful of students I was thrilled to see exit my life when the semester was over, I don't think I could ever shoot a student (and it seems the shooter is also a student in the majority of school shootings). As PGD-GRAD mentioned up-thread, teachers tend to have a "students first" kind of mindset. To completely dismantle that mentality in order to effectively remove the threat would be difficult under the best of circumstances. And an active shooter situation is hardly the best of circumstances. In my opinion, more guns is not the solution.