I taught high school for 27 years and I knew of only one instance where a teacher carried a gun to school. A lady I taught with carried a .38 snub nose revolver in her purse at all times. Her uysband owned a small gun store in town and after school each day, she went to work at the store and served as bookkeeper. She had to make the night deposit for the store and on two occasions within 6 months of beginning to do so, she was robbed at the bamk's night depository, and the second time she was severly beaten by the robber. After the second incident, she got her CCL and began to carry full time. She left her purse in our department break room one morning and I just happened to notice the snubbie in her purse. I didn't say anything to her, but I guess she assumed that I had seen the pistol and she ask that I not mention it to anyone. I said "What pistol?"
Three years after she retired from teaching, the Central Office staff found out that she had been carrying a gun to school and went ape s*it crazy about it. One morning before school, the Assistant Superintendent came into our building with two City Police Officers and called all the faculty down to the Library, where she proceeded to tell all of the teachers that we were going to be searched for weapons by the Police Officers. I got the floor and told her that I would decline her offer, to which she then got in my face and said that I could either be searched or be fired. I asked her if she was going to be included in the search, and she rudely said no, she wasn't going to be searched. I then told her that I would agree to be searched if I could then in return search her. That drew a chorus of laughs from the rest of the teachers, and more than several male teachers volenteered to help me.
She then stormed out of the library and called the Superintendent, who came to the schooAlnd also got up in my face. He proceeded to tell me that if he could prove that I had prior knowledge about the retired teached carrying a firearm onto school property, he would see to it that I was fired and then took to court as a co-conspirator. After I told him that he had better get out of my face (he was related to me), I told him to have at, but that he could expect me to file a lawsuit as well against him and the school baord. The search of the teachers was dropped, but they did have the Police interview the retired teacher who stated that to her knowledge, I did not know about her carrying a concealed weapon onto school property. After this episode, when ever the hair-brained Assistant Superintendent came into the building while I was there, I suddenly had to go to the restroom, where I stayed until she left the building.
The two high schools and middle schools here have had an armed Police Officer that split time between one high school and one middle school since 1997. When that policy was adopted by our school board, violence in the four schools dropped by about 99.9%. Noone has attempted to go in and try to pull off a mass schooting in any of the schools in the county either.