It is total enrollment for all students in all years in a program leading to an MD degree across the school. This would be anyone who has formally matriculated into the school but has not withdrawn/dismissed from the school. This would include:
-all active M1-M4
-those enrolled in dual degree but not actively taking M1-M4 curriculum/rotations
-those on leave for personal/health or other reasons
-those who are repeating a year and/or course
It would not include those who have been accepted but deferred before matriculating.