--- title: "AMBOSS Step 2 CK Self-Assessment: How the Score is Calculated" description: Take a look at how the AMBOSS Step 2 CK Self-Assessment 3-digit score is calculated. image: https://blog.amboss.com/hubfs/blog-step2ck-score-calculated.png --- [![ambossIcon](https://manus-media.amboss.com/2020/07/amboss-icon.svg "Amboss Icon")](https://www.amboss.com/us) [Register](https://www.amboss.com/us/account/register) [Log in](https://www.amboss.com/us/account/login) ## [AMBOSS Blog](https://blog.amboss.com/us) ### [USMLE](https://blog.amboss.com/us/tag/usmle) Categories - [USMLE](https://blog.amboss.com/us/tag/usmle) - [Clerkships](https://blog.amboss.com/us/tag/clerkships) - [Study Tips](https://blog.amboss.com/us/tag/study-tips) - [Student Life](https://blog.amboss.com/us/tag/student-life) - [Residency](https://blog.amboss.com/us/tag/residency) # AMBOSS Step 2 CK Self-Assessment: How the Score is Calculated [Sophie Moran](https://blog.amboss.com/us/author/sophie-moran) - Apr 13, 2023 ![A gauge showing an example 3-digit score from the AMBOSS Step 2 CK Self-Assessment.](https://blog.amboss.com/hubfs/blog-step2ck-score-calculated.png) Share this Post: One of the most popular features of 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. To get a 3-digit score, you must complete all four blocks (that’s 160 questions) of [the AMBOSS Step 2 CK Self-Assessment](https://www.amboss.com/us/usmle/self-assessment/step2) by the stated end date. Everyone who completes the self-assessment receives a report with their score as well as an analysis of their performance and personalized study recommendations.  ## How the 3-digit score is calculated To calculate the 3-digit score you receive after completing the AMBOSS Step 2 CK Self-Assessment, we calibrate the score prediction using self-assessment takers within two weeks of their actual exam date as a reference. We assume that the performance of this reference cohort, who are at or very close to the peak of their preparation level, is comparable to the performance of actual [USMLE® Step 2 exam-takers](https://www.amboss.com/us/usmle/step2).  The publicly available performance data of Step 2 takers allows us to correlate the relative performance of the reference cohort on the AMBOSS Step 2 CK Self-Assessment with 3-digit scores. For example, a self-assessment taker from the reference cohort scoring in the 60th percentile compared to the rest of the reference cohort should get roughly a 3-digit score of 252. Applying this principle to the entire score range allows us to transform the performance of any self-assessment taker to a projected 3-digit score.  Our algorithm further considers[the individual performance on easier and more difficult questions](https://blog.amboss.com/us/amboss-qbank-psychometric-analysis) to fine-tune the prediction. We also use the performance data from previous years to iteratively improve our score prediction. ## The Step 2 CK passing score As you may already know, the passing score for the USMLE Step 2 CK exam is 218, starting July 1st 2025. You can read the official announcement from the USMLE [here](https://www.usmle.org/change-step-2-ck-passing-standard-begins-july-1-2025).    Boost your Step 2 prep with our 30 day high-yield study plan: Step 2 Prep Condensed.  [![Go to study plan ](https://no-cache.hubspot.com/cta/default/4491426/ddd69e51-afea-463d-8f2f-549a4a582a45.png)](https://cta-redirect.hubspot.com/cta/redirect/4491426/ddd69e51-afea-463d-8f2f-549a4a582a45)   ## Related posts you might like [USMLE](https://blog.amboss.com/us/tag/usmle) May 21, 2023 ### How to Read the AMBOSS Step 2 CK Self-Assessment Score Report Your performance results represent the relative coverage of a given content area on the exam. These ... [Read more](https://blog.amboss.com/us/amboss-step-2-ck-self-assessment-score-report) [USMLE](https://blog.amboss.com/us/tag/usmle) Jan 09, 2023 ### AMBOSS Step 1 Self-Assessment Score Calculation Explained One of the most popular features of the AMBOSS Step 1 Self-Assessment is the 3-digit score. While ... [Read more](https://blog.amboss.com/us/step-1-self-assessment-score-calculation-explained) [step 1 self-assessment](https://blog.amboss.com/us/tag/step-1-self-assessment) Feb 22, 2023 ### AMBOSS Step 1 Self-Assessment: How to Read Your Report That’s it! The annual AMBOSS Step 1 Self-Assessment Week is finished for another year. A big ... [Read more](https://blog.amboss.com/us/the-step-1-self-assessment-how-to-read-your-score-report) #### Join Our Mailing List And get updates on new posts and news about AMBOSS sent directly to your inbox. Instagram [Follow](https://www.instagram.com/amboss_med/) ## All-in-one resource for residents and medical students. Sign Up Now to Get **5 FREE Days** of AMBOSS [![](https://s3-eu-west-1.amazonaws.com/manus-assets-staging.amboss.com/2020/07/social-buttons-email-2020.svg)](https://www.amboss.com/us/account/register) - [© 2020 AMBOSS](https://www.amboss.com/us) - [Medical Knowledge](https://www.amboss.com/us/knowledge/index) - [Terms and Conditions](https://www.amboss.com/us/legal/terms) - [Privacy](https://www.amboss.com/us/privacy) - Privacy Settings - [Legal Notice](https://www.amboss.com/us/legal/imprint) - [Get Support & Contact Us](https://support.amboss.com/hc/en-us) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Sophie Moran", "url" : "https://blog.amboss.com/us/author/sophie-moran" }, "dateModified" : "2025-06-19T14:38:50.420Z", "datePublished" : "2023-04-13T12:41:00.000Z", "headline" : "AMBOSS Step 2 CK Self-Assessment: How the Score is Calculated", "image" : [ "https://blog.amboss.com/hubfs/blog-step2ck-score-calculated.png" ], "mainEntityOfPage" : { "@id" : "https://blog.amboss.com/us/amboss-step-2-ck-self-assessment-how-the-score-is-calculated", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://blog.amboss.com/hubfs/US_Logo_RGB_horizontal.png" }, "name" : "AMBOSS SE" } } ```