USMLE® Step 1 Exam Guide CSS for Pillar Pages What is the USMLE? USMLE® stands for the United States Medical Licensing Examination® and is comprised of a series of exams—Step 1, Step 2 CK, Step 2 CS, and Step 3. Medical students and graduates must pass each of these exams to obtain medical licensure in the … Continue reading USMLE® Step 1 Exam Guide