Out of all the people I know who have school age children, only a minority of them attend church. You might have seen in the news, recently, that people who are unaffiliated with any church are the fastest growing segment of the American public, compared to all the standard religious affiliations. It's like over 20% of the population. Churches are closing up all over the place because fewer and fewer people bother with them anymore. So, if you are living in some bizarre community, filled with fanatics and quite unlike the majority of American towns, maybe you need to move.

My suspicion is that people are a lot less interested in your religious opinions than you would like, and, so, you are in people's faces with anti-religious talk because you want that conflict. People don't have to put up with that . . . and they won't.

Catholic schools are attended by lots of non-Catholics who do just fine in that environment. Here's one source for that, and there are many: Mythbusting: Catholic Schools | Department of Catholic Schools