One other thing that deserves mention is that I bought a copy of Prentice Hall's Literature: Timeless Voices, Timeless Themes Platinum Edition, an anthology commonly taught in Texas schools. It has no medieval content whatsoever, though it does have a few medievalist texts: a 6-page excerpt from Don Quixote, a "Morte d'Arthur" excerpt from Tennyson's Idylls of the King, and an 11-page excerpt from T.H. White's The Once and Future King. No Canterbury Tales, no Beowulf, no nothing. In order to get actual medieval literature, you have to their "British Tradion" or "World Masterpieces" editions.
So, Texans, if you're wondering why your fellow Texans know so little medieval literature, it might be because their teachers weren't given the opportunity to cover the material.