USMLE Step 2 CK ("Clinical Knowledge") is a nine-hour-long exam that represents the second part of the United States Medical Licensure Examination.
[1] It assesses clinical knowledge through a traditional, multiple-choice examination divided into eight 60-minute blocks, each containing up to 40 questions, as well as an hour of break time.
[10] Step 2 CK tests the aspiring physician's knowledge of medicine putting special emphasis on the principles and mechanisms underlying disease, and the therapies needed to address them.
[12] As of academic year 2020-2021, the mean CK score was 246 with a standard deviation of 15 for first-time takers from accredited medical schools in the United States and Canada.
[14] USMLE provides each test taker with a score report that includes information on their performance on various physician tasks, disciplines and systems.