I know this may be confusing to some but it’s very simple once you fully understand the difference. A hospital that has a residency for a certain program will have a green book status for that particular rotation. And if there are other rotations then it will fall as a blue book.
For example, for Jackson Park Hospital, it has a family medicine residency program; therefore, the family medicine rotation for medical students counts as a green book rotation. However, the internal medicine rotation at Jackson Park Hospital counts as a blue book because the hospital does not have an internal medicine residency program there. Other core rotations count in the same category such as Psychiatry, OB/GYN, Pediatrics, and Surgery.
If you want to go for Internal Medicine residency then you may want to do your Internal Medicine clerkship at Mercy Hospital instead of Jackson Park Hospital. Some residency programs prefer their applicants to do all their core rotations with a green book status; however it’s not universal so don’t worry about it. The reason I say this is that a lot of FMGs get residency programs in IM but they have no US clinical clerkship experiences. With SJSM you have 80 weeks of US clinical clerkships so that’s why you shouldn’t worry about it. The same goes with other non SJSM Caribbean students, they have 72 weeks of US clinical clerships.