Ben, there are very few nuns around anymore so almost all the teachers at catholic school are lay people. The school is just run by the catholic church. Plus, when I was young education was not regulated the way it is now. The teachers did not need to have teaching degrees to teach in grade school. They were "supervised" by someone who had the degree. Most of the nuns I had were still in the process of becoming nuns. Many of them quit the convent in the 1960's when the church underwent major changes.

I have to say though that my education was not good. I never had a geography class. The only history I had involved the catholic missionaries that came to America in the early days. Music, art and gym were nonexistent. I spent most of my day in third and fourth grade copying my reader so I had nice penmanship. It's a wonder I finished high school let alone graduated with my masters. Maybe God was on my side.