Step 1 assesses whether medical school students or graduates understand and can apply important concepts of the sciences basic to the practice of medicine.

Step 2 assesses whether medical school students or graduates can apply medical knowledge, skills and understanding of clinical science essential for provision of patient care under supervision

Step 2 Clinical Skills Registration, Scheduling, & Test Centers

USMLE Step 3 assesses whether medical school graduates can apply medical knowledge and understanding of biomedical and clinical science essential for the unsupervised practice of medicine