Dozens of the athletes may follow Casey's example and leave before their eligibility is affected, The Boston Globe reported Wednesday.
The scandal arose after allegations surfaced of widespread cheating on a take-home exam for "Introduction to Congress," a course popular for its compatibility with sports schedules.
Casey's co-captain Brandyn Curry is also expected to leave the university, the Globe said.
However, withdrawal by any of the athletes does not necessarily imply they are guilty. Coaches have informed their players that if they leave before any of their games are played, they would still be eligible to play next season.
As many of half of the implicated students play varsity sports.
Students are prohibited from discussing the test during the period designated for taking it at home. They are allowed to use any available notes.
An athlete who spoke to the Globe on condition of anonymity said teammates often shared notes and discussed the course on team buses.