One of the most ridiculous laws ever.
In any rural area in any state you will find pick-up trucks waiting to pick up kids after school. Half of these trucks have rear window racks with guns in them. My truck had a rack but mounted below the window.
I used to do Revolutionary Rifleman presentations in local schools. I did this often over the years until this law came along. Then no more rifle, no more presentations.
Later, my State Leg., in it's wisdom, passed a law allowing guns in schools for Civil War presentations. I was still prohibited because I had my Rev. period flintlock rifle. 'splain me the sense of that.