“Greenbook” rotations mean a clinical science program is accredited by ACGME (Accreditation Council for Graduate Medical Education). These Green-Book clinical rotations are mostly associated with Teaching Hospitals that have Residency Program for the rotation in which you are being rotate. These rotations can be in Pediatrics, Surgery, OB/GYN, Family Medicine, and internal medicine etc. These hospitals are actually focused on teaching. There will be interns, attending residents and fellows for learning. If you go to any hospital or clinic, which has no residency programs then, these rotations are considered as Blue-Book Rotations.