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Students, Residents & Practicing Physicians

USMLE Exams

NBME Self-Assessment Services (NSAS)
International Foundations of Medicine Individual Registration (IFOM)
Health & Wellness Coaching Exams

Administrators, Faculty & Program Directors

Subject Examinations
Customized Assessment Services (CAS)
International Foundations of Medicine (IFOM)
NSAS Voucher Program
USMLE Support Services

Chief Proctor Resource Site

The Comprehensive Basic Science Self-Assessment can help reinforce your knowledge, track your progress and provide your estimated probability of passing the USMLE® Step 1 if you test within one week – so you’re confident and ready for exam day*.

*Any estimated probability is not a guarantee of any Step 1 performance, and many factors may impact performance on Step 1.

Get a more holistic and actionable view of your study progress



With equated percent correct scores for your overall and content area performance, you’ll find greater detail on your strengths and weaknesses to better plan your study time. In addition, longitudinal data shows your progress and areas to focus on over time by assessing content mastery and changes across multiple Comprehensive Basic Science Self-Assessments. Learn more about these updates through the resources below.



Updated Sample Score Reports





View Answers to Common Questions