Where I grew up the cluster of three schools (elementary, middle, and high) had the pool at the middle school. It was open to the public evenings and weekends during the school year. Plenty of lakes to swim in during the summer - but used for ice fishing in the winter!
We had a rifle range down in the basement of the school.
During hunting season we took our guns to school and put them in our lockers and after school on the ride home on the bus I would have the driver drop me off about a mile from home and would hunt my way back to my parents place!
Hell I remember my mom giving my older brother $35.00 to buy a 30-06 from one of his friends at school and carrying it home on the bus!
I sure miss those days!