It seems they can take it every quarter though - it just counts 8 toward graduation. A majority of football players are going to be there 5 years due to redshirting and with Summer term they probably can keep their graduation rate close to perfect. Lots of athletes take summer correspondence even at elite schools. Fortunately for them private universities like Duke, Stanford, Notre Dame can hide a lot of the information that would be embarrassing because they aren’t obligated like public schools. Duke use to release information on average SAT and majors for the sports teams many years ago. When an expose was done on the Men’s Basketball team showing that a majority were sociology majors and what the average SAT was they stopped publishing that info.