"The Faithful"

Right now on iTunes, they have "Back to School" Playlists.

Seen here

They are divided up by 'cliques', so there is: "Hippies", "Sk8ers", "Greeks"...and a list titled "The Faithful".

Here's the description:
The Faithful can be hard to recognize at first,
but a quick glance at their music collection will
offer up names like Newsboys and Jars of Clay.
Key factors to be aware of: large periods of time
may elapse in conversation without hearing any
foul language, song lyrics are taken especially
to heart, and inspirational quotes are in abundance
(whether in printed form or conversational).

And, to be fair, the playlist is actually pretty good.
Crowder, Relient K, Plumb, Natalie Grant...
Oh, and Brian Littrell (yes, of BSB--Backstreet Boy--fame)

They could have pegged them for Michael W. Smith and Cheri Keaggy, or Amy Grant.