Most conferences have a graduated exit fee structure, i.e., the shorter the notice the higher the fee. The A-10 imposes a $2 million fee if the notice is less than 12 months, the fee is less with greater notice. In other words, most colleges can exit their league affiliation rather quickly, but it typically comes at a high financial cost. Not sure what the exit penalty is for the Horizon, but here is some info on a few of the majors:
ACC: School must notify conference at least ten months in advance and pay three years' worth of conference distributions (roughly $50 million).
Big 12: School must notify conference at least 24 months in advance and pay one years' worth of conference distributions (roughly $19 million). Schools can accelerate their exits, but they must pay more to do so: notification prior to 18 months increases exit fee by 40%, prior to 12 months increases fee by 60%, prior to six months by 80% and within six months doubles the fee. Conference also has grant of media rights through 2024-25.
Big East: School must notify conference at least 27 months in advance and pay $5 million. Schools can accelerate their exits, but they must pay more to do so: an immediate exit cost West Virginia an additional $15 million; leaving one year earlier cost Pittsburgh and Syracuse an extra $2.5 million each.
ACC: School must notify conference at least ten months in advance and pay three years' worth of conference distributions (roughly $50 million).
Big 12: School must notify conference at least 24 months in advance and pay one years' worth of conference distributions (roughly $19 million). Schools can accelerate their exits, but they must pay more to do so: notification prior to 18 months increases exit fee by 40%, prior to 12 months increases fee by 60%, prior to six months by 80% and within six months doubles the fee. Conference also has grant of media rights through 2024-25.
Big East: School must notify conference at least 27 months in advance and pay $5 million. Schools can accelerate their exits, but they must pay more to do so: an immediate exit cost West Virginia an additional $15 million; leaving one year earlier cost Pittsburgh and Syracuse an extra $2.5 million each.