I realize this will sound quaint but all the boys would brings our backpack guns and ammo to school.
The Nuns would tag our guns and ammo and put them the Mother Superior's closet.
At 3:00pm there would be a line of cars in front of the school: our fathers there to take us “Up North Michigan” for the hunt.
The Nuns would issue the guns and ammo and we take our backpacks and look for our dad.
Never an incident; never an issue.