I also had a Catholic education (all-girls) but it was not as harsh as yours sounds like it was. Nevertheless, I rebelled in high school and asked too many questions (I was given a warning) about the religion. I'm not in touch with any of the people I went to school with but in the early years after school they were a very varied bunch, nuns, divorcees, and non-marriers but that was a long time ago. One thing that I do value about the Catholic education is the social justice aspect which is strong.
You've made me wonder what happened to all the girls I went to school with. Most of them would be grandmothers now.