Dallas still had a sizable Catholic population:
http://www.csodallas.org/schools/interactive-map/
Map of Catholic Schools in Dallas. Seem quite a bit. One could say maybe they have more Catholic Schools now. That’s a possibility but let’s also remember, Catholic Schools in many instances have struggled to say open. Anyway, I know many of those schools have existed there before 1963. So, it may be Bible Belt but clearly, other faiths were there as well.
I agree with your comments there. Thanks for the response.