Shooting clubs in the basements of public schools were once common.
Number of genocidal school shootings in that era (to my knowledge): zero.
In the late 50’s we lived on Long Island, NY.
My older Brother was in 9th Grade and took his .22 Bolt Action Rifle to School. He was in the Shooting Club.
There was a Gun Range in the Basement at his School.
Nobody blinked an eye when he carried his Rifle walking to School.