I hope it's not uncouth to bump old topics, but I had to comment on BYU.
It's a solid law school, and it's very economical, especially if you're Mormon, even out of state. However, as a Mormon in Salt Lake City I wouldn't consider attending BYU.
Although it's insulated to an extent from the frankly bizzare undergraduate culture, it's still in the heart of Provo, Utah. About 30 minutes south of Salt Lake, it's markedly more conservative. In recent decades BYU has retrenched, becoming more reflective of conservative Provo and the LDS Church. As the flagship Latter-day Saint University, students are expected to adhered to a strict honor code
which forbids alcohol, smoking, premarital relationships (including any homosexuals), and even immodest clothing. As a non-Mormon (or "gentile" as Mormons will obliviously call you), you must also get a recommendation from your religious or some sort of secular leader.
Therefore, non-Mormons would probably not be happy there. It's not because Mormon students and professors would be crass to them (to the contrary, they'll probably strive to be especially respectful), but because the school itself is built by and for Mormons, especially more conservative ones.
As for the rankings, BYU's J. Reuben Clark Law School is really a solid school, but they're probably helped by the number of applicants. Many Latter-day Saints around the world aspire to go to BYU. Thus the school can be--and is--more selective and competative than it might otherwise be. Most rankings place a high emphasis on selectiveness, and BYU's got it.
I would imagine George Mason gets a similar boost by artificially boosting their applications and increasing selectiveness.
Incidentally, I think jsmagichat is in fact Mormon (probably from Utah) or is at least ex-Mormon. Few non-Mos would know to use the term "gentile" so casually. Many former Mormons are quite anti-Mormon though, so I suppose that's a possibile or even probable.