This is a very well done in depth article on how the March Madness money gets distributed among D1 schools. No surprise that the big conferences are top takers. The Big 10 is at the top with MSU bringing in the most. What is interesting is how much money schools in the Big 10 have made even thought they have contributed 0 $, like Northwestern, yet they have received about $24.5 million over the past 30 years.
http://www.bloomberg.com/graphics/2015-march-madness-basketball-fund/
http://www.bloomberg.com/graphics/2015-march-madness-basketball-fund/