T-V Game broadcasts are an expensive undertaking. Division II games, while important to the fans, don't have the drawing appeal of the D-I games.
In addition, nobody is going to watch a game between two private schools when you have VU-UT, Michigan/Ohio State, and a dozen or so other games are on at the same time. The D-I games compete against some conference championship games but the schedule is more open on that weekend other than those games.
I have been to both the DII Clinic Bowl (back at Vandy) as well as several BCBS Bowls in the 'Boro. The crowds are MUCH larger for the public schools (even in the smaller classes).
CBQ, it isn't discrimination. If the TSSAA could make money doing the DII broadcasts I'm sure they would.
While BA and Mccallie have some money, I doubt that the other schools have thousands to throw at a t-v broadcast that VERY few people would actually watch.