AMBOSS Step 2 CK Self-Assessment: How the Score is Calculated

Sophie Moran - Apr 20, 2021

One of the most popular features of the AMBOSS self-assessments is the 3-digit score. This score is intended to give you an idea of where you currently stand in your USMLE® preparation. And the first annual AMBOSS Step 2 CK Self-Assessment is no exception: if you complete all four blocks of the self-assessment by May 9, 2021, you’ll receive a score report with a 3-digit score as well as your peer percentile ranking and personalized study recommendations.

How the 3-digit score is calculated

The score you’ll receive after completing the AMBOSS Step 2 CK Self-Assessment is calculated using the performance of self-assessment-takers that are within weeks of their actual USMLE Step 2 CK exam date as a reference to calibrate the scores. In addition, we use a statistical method called “item response theory” which estimates the proficiency of each individual exam-taker and the specific questions they answered for score calculation. That means getting a very challenging question right will have a greater positive impact on your final score than getting an easier question right.

The scores of the reference cohort are checked against data from actual USMLE Step 2 CK exam-takers. To ensure their accuracy, the minimum, maximum, and mean scores are all assessed in the reference cohort as well as in the entire cohort of AMBOSS Step 2 CK Self-Assessment participants.

Once the self-assessment is over, we’ll be working hard to get you your 3-digit score as fast as possible. You can expect to receive a score report by May 12, 2021. 

Best of luck!