Do u believe that teachers should be allowed to keep guns in classrooms ?

I don't know about this one right here. I mean how many times have we seen teachers, punch, hit, kick, and spit on children while they were in the classroom. Anybody can lose their temper.
And you never know at what point will a teacher get mad or afraid enough to want to kill. So why not put armed guards in the front entrances of schools around the world. It works for the courts, the hospitals, the military bases, and certain clubs. What do you think about this.
Should teachers be allowed to keep locked guns in classrooms. 😐