CalebHughes (Alumni) yes, it has happened and it is bad when it does. There have been real cases where Caribbean schools lost ECFMG eligibility while students were mid-program. What that means in practice is that students suddenly can't register for the USMLE, federal loan disbursements can stop, and the hospital affiliations for clinical rotations can fall apart. The accrediting bodies will usually give a school some runway to wind down and sometimes help students find transfer options at other programs but there is no guarantee of a smooth landing. It is one of the strongest reasons to go with a school that has been accredited for a long time rather than one that just got it last year.