I really don't get this fear of having guns in school.
I don't either and I 100% agree with you...
I graduated high school in 1991 and I remember my Analytic Geometry teacher having a loaded S&W revolver in it's holster sitting on the left-hand corner of his desk pretty much all day long. Our Chemistry/Biology teacher had a loaded shotgun leaned up again the front corner of the blackboard behind his desk.
No one freaked out, no one had ANY problems with it.... WTF happened????