Yes,
I went to a 7th Day Adventist school here in the USA from grades 1 through 4. It was kind of conservative, though luckily we didn't have uniforms though the dress code was strictly enforced. It was kind of old-school where there was more than one grade pre classroom with only one teacher. I didn't learn much of anything, which lead to all sorts of problems when I entered a secular public school in 5th grade (I was very far behind in reading, science, and mathematics and had to be put in the "special" classes). The good thing about that school was that it was very culturally/ethnically diverse, so I picked up a little Spanish and was accustomed to speaking with people who had accents, etc. while the public school I attended later on was basically all white kids from the US. Being introduced to diversity at a young age was really beneficial to me. At that religious school I attended, it did really shelter me in other ways, like I never heard of homosexuality and I didn't know of any "bad words" or anything that was active in the current culture (like, I found out that the Spice Girls and Backstreet Boys were all the rage with girls my age though I had never heard of them before since I had only heard whatever my mom played on the radio or religious music).
For my last two years of undergrad I had no choice but to attend a Catholic college. It wasn't too conservative, since I was only in the Adult and Continuing Education program. I had to take a theological class, but I really enjoyed it. The professor was Catholic but he was really cool and we talked about all sorts of religions and we had an assignment to attend a church/temple/whatever of a faith other than our own and write about it. It was a really cool assignment. There was a lesbian in one of the classes I was in, and everyone seemed accepting of her. (Though, quite a bit of the other students there were not Catholic or even Christian either, since they were kind of in the same boat as me where this was the only college accommodating of people who worked full-time in the area).
