I am a High School Nurse in a metropolitan area. I think my insight matters here. More guns = more death. Period. We have armed police enforcement on campus and they have had to respond multiple times but only with tazers, even though armed with handguns. Guns allowed just means tons-o-guns, permitted or not. There will be bloodshed, and in schools, with teenaged and young adult populations as well, mental cognitive maturation has not developed fully and will not be fully developed until well into the early twenties... An armed teacher is not safe; he or she is not a trained professional in firearms and/oremergent situations, and nobody else on that campus is either, except the Police guards on campus.