I gather that is actually a thing in many places. Not here. I was working at an ABC TV station that switched to CBS right before March Madness, and our new boss was from a CBS station elsewhere in the U.S. He was all excited until he found out the sales department couldn't sell the commercials in the coverage. Then he saw the ratings and found out we were the 20th largest CBS station in the nation, but viewership of March Madness here ranked us number 200 among CBS stations for viewers. But we have no schools involved for the most part.