My parents.
First through twelfth grades.
Catholic schools had one absolute control over discipline: expulsion. The academic focus remained tight.
I got a good education. Philosophy was required in eleventh grade. Our English courses included Oedipus Rex and Thomas Mann's Death in Venice, and works of similar weight.
As for the religion, I understand it very well. But believe? No. They taught me to think. That was the end of belief.