The data was culled from a study of former college players released earlier this year. If a player diagnosed with CTE changed schools, the player counted for every school he played for.
https://www.usatoday.com/story/sports/ncaaf/2018/11/02/an... /
Of course the "P"s led the way with UGA having 9 former players and MSU 8. O$U had 5. Cincy, Kent, Fiami and WMU were among the schools with "one or two." Probably every college football program has had one or two former players with CTE because safe tackling techniques started being a focus only about ten years ago.