How Predictive Is AMBOSS SA for Step 2 CK?

AMBOSS SA has been submitted to Predict My Step Score 7,809 times and tracked against the real Step 2 CK results students went on to report. In that data, AMBOSS SA showed low predictive power: only a loose link to the real score.

What is AMBOSS SA?

The AMBOSS Self-Assessment is AMBOSS's full-length timed practice exam, run in the NBME's block format. It reports a 3-digit predicted score that AMBOSS calibrates on students who took it within two weeks of their real exam, and it draws on a different question pool than UWorld or the NBME forms.

What is a good AMBOSS SA score?

In our data, AMBOSS SA scores ranged from 183 to 276. Real scores usually landed well higher than the AMBOSS SA score, but the link is real but loose: two students with the same AMBOSS SA score can finish well apart on the real exam. A "good" AMBOSS SA score is one that puts your likely outcome comfortably above the score you need — run it through the predictor to see where you stand.

When should you take AMBOSS SA?

Take it in the second half of dedicated study, when you want a full-length sitting from a different question pool than UWorld. In our data, the gap between AMBOSS SA and the real result was larger than for most Step 2 CK practice exams — the pattern you would expect from a test many take early and then improve on.

Does it matter when you take AMBOSS SA?

Timing matters twice over. First, a score from six weeks out is a snapshot of a student who then kept studying, so early tests tend to sit below the real result — much of what looks like "underprediction" is simply improvement after the test. Second, our predictor does not treat every score you enter equally: each one is weighted by the exam's R² and by how recently you took it, with a recency factor that decays exponentially from your most recent test back to your oldest, and your three most recent scores drive the final adjustment. Enter the days-before-exam for each test honestly — it changes the answer.

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AMBOSS SA score

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Takes you to the predictor with AMBOSS SA already filled in — add your other practice exams there for the full prediction.

How AMBOSS SA compares

Wondering whether to take AMBOSS SA next? See which practice tests are most predictive.

Frequently asked

Is AMBOSS SA accurate?

AMBOSS SA showed low predictive power in our data: only a loose link to the real score. But no practice test is "accurate" on its own — most are taken while you are still improving, so the number you see is rarely the number you get. Combining your scores, weighted by each exam's track record and timing, gives a sharper answer than any single test. Predict your Step 2 CK score →

How far off is AMBOSS SA usually?

Like most practice tests, AMBOSS SA is usually taken while you are still improving, so real scores tend to come in higher. What matters is the size of that gap, and for AMBOSS SA it is larger than for most Step 2 CK practice exams in our data. The exact figures power our predictor rather than this page — it corrects for AMBOSS SA's gap and for when you took each exam, automatically. Run your scores through it →

Is AMBOSS SA or NBME 16 more predictive?

NBME 16 is more predictive in our data. The exact gap is part of the full ranking, which is available to premium users.

Where does this data come from?

7,809 AMBOSS SA scores have been submitted to Predict My Step Score so far. Whenever a student also reports their actual Step 2 CK result, the pair goes into the model behind this page; it was last refit on 2026-05-14.

Can't I just ask ChatGPT how predictive AMBOSS SA is?

Not reliably. A prediction is only as good as the paired data behind it: real AMBOSS SA scores matched to the real Step 2 CK result those same students went on to get. General-purpose AI models are trained on forum posts and articles, not on verified outcomes, so what you get back is a summary of anecdotes rather than a calibrated estimate. The numbers on this page come from students who reported both. Read more →

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Data refreshed 2026-05-14.

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