Please note Theology (as opposed to Law, History, etc) is in a class by itself. There is no regional accreditation for a pure theology degree. The highest standard is Association of Theological Schools
http://www.ats.edu/Pages/default.aspx. There are several other layers below that.
The point being a majority of “religious” degrees are not from regionally accredited programs. But just because a school is not accredited does NOT make them a diploma mill.