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Step 2 CK self-assessment estimator

NBME 12 Step 2 CK Score Calculator for CCSSA Form 12

Give the NBME 12 Step 2 CK score calculator a miss count, a percent correct, or a score you already hold. Form 12 starts from the same fitted value as Form 10 and falls fractionally slower, which makes the pair the cleanest comparison available.

200 questionsPassing ≈ 218Runs in your browser

Not affiliated with, endorsed by, or sponsored by the NBME® or USMLE®. Educational estimates only.

Enter your result

Any way you have it — wrong answers, percent correct, or a score you were already given.

= 85.0% correct • 170 correct

Enter your result and press Calculate to see your estimated three-digit score, pass probability, and what the result means.

Quick take on this form

The NBME 12 Step 2 CK score calculator runs 300.18 minus 1.09 points per miss across 200 questions. That is the same starting value as Form 10, with a slope one hundredth of a point gentler. The two curves never separate by more than two points, and through the pass region they agree to within one. A change between the two sittings is nearly all you.

NBME 12 score reference

Estimated three-digit score and pass probability at each wrong-answer count for NBME 12 (CCSSA Form 12).

NBME 12 wrong answers to estimated score reference
WrongCorrect %Est. scorePass prob.
0100.0%30099%
597.5%29599%
1095.0%28999%
1592.5%28499%
2090.0%27899%
2587.5%27399%
3085.0%26799%
3582.5%26299%
4080.0%25799%
4577.5%25199%
5075.0%24699%
5572.5%24099%
6070.0%23595%
6567.5%22988%
7065.0%22488%
7562.5%21875%
8060.0%21360%
8557.5%20845%
9055.0%20230%
9552.5%19715%
10050.0%19115%
10547.5%18615%
11045.0%18015%
11542.5%17515%
12040.0%16915%
12537.5%16415%
13035.0%15815%
13532.5%15315%
14030.0%14815%
14527.5%14215%
15025.0%13715%
15522.5%13115%
16020.0%12615%
16517.5%12015%
17015.0%11515%
17512.5%10915%
18010.0%10415%
1857.5%9915%
1905.0%9315%
1952.5%8815%
2000.0%8215%

Estimates only. Rows step by five wrong answers; your exact result is calculated above.

How the NBME 12 Step 2 CK score calculator turns misses into a score

The NBME 12 Step 2 CK score calculator starts from 300.18 and takes off 1.09 for each of the 200 questions missed.

Percent correct is the same input in other clothes: the NBME 12 Step 2 CK score calculator reads 65% as 70 misses and returns 224.

Seventy-five wrong is the pass line, and the NBME 12 Step 2 CK score calculator puts 218 there, at 62.5% correct.

One more miss and the NBME 12 Step 2 CK score calculator returns 217. Nothing sits between those two outputs.

Because 1.09 does not divide the scale evenly, the NBME 12 Step 2 CK score calculator never reports 219, 231 or 243.

The value just above the pass line is one the NBME 12 Step 2 CK score calculator cannot produce at all.

Hold a three-digit score already? The NBME 12 Step 2 CK score calculator runs the line backwards to the miss count behind it.

Nothing else reaches the NBME 12 Step 2 CK score calculator. Subject, timing and flagged items are all invisible to it.

NBME 12 conversion chart set against the Form 10 curve

Ten wrong converts to 289 on the NBME 12 Step 2 CK score calculator, 20 wrong to 278, 30 wrong to 267.

At 40 misses the NBME 12 Step 2 CK score calculator returns 257. At 50, it returns 246. At 60, 235.

Seventy wrong is 224 and 75 wrong sits on 218. Beyond that the NBME 12 Step 2 CK score calculator gives 213 at 80, 202 at 90, 191 at 100.

Backwards, a 230 needs 64 or fewer misses on the NBME 12 Step 2 CK score calculator, a 240 needs 55, a 250 needs 46.

Set that beside Form 10 and the NBME 12 Step 2 CK score calculator is nearly indistinguishable from it.

At 40 misses Form 10 returns 256 where the NBME 12 Step 2 CK score calculator returns 257. At 75 misses both land on 218.

The largest gap in the usable range is two points, so the NBME 12 Step 2 CK score calculator and Form 10 are one instrument.

If you sat both and the results differ by ten, the NBME 12 Step 2 CK score calculator did not do that. You did.

How accurate the NBME 12 Step 2 CK score calculator is on a retake

The NBME 12 Step 2 CK score calculator states plus or minus six points, with a realistic exam range five to twelve points higher.

The NBME 12 Step 2 CK score calculator uses publicly circulated data rather than the exam makers. Read how each curve was built.

Retakes carry a hazard the arithmetic cannot see, and it is the main reason to distrust a high NBME 12 Step 2 CK score calculator reading.

Sit a form you have worked through and the NBME 12 Step 2 CK score calculator measures recall of items, not knowledge.

The NBME 12 Step 2 CK score calculator then reads high for reasons that will not repeat. Take the second reading on an unseen paper.

The NBME 12 Step 2 CK score calculator cannot see timing, fatigue, or reference material used during the sitting.

A good NBME 12 predicted score is one where the NBME 12 Step 2 CK score calculator puts the whole band above 218, from about 225.

At a converted 220 the NBME 12 Step 2 CK score calculator spans 214 to 226, deciding nothing. At 230 it spans 224 to 236.

Rebuilding after a bad result? Read the NBME 12 Step 2 CK score calculator in questions, not in points.

A converted 190 is 101 misses, so the NBME 12 Step 2 CK score calculator needs about 26 more correct answers to reach 218.

Where NBME 12 fits, and converting a raw count by hand

The NBME 12 Step 2 CK score calculator earns its place as a second or third reading, especially when rebuilding.

Two things make the NBME 12 Step 2 CK score calculator suitable: a six-point band tight enough to detect change, and a matched Form 10 curve.

How far should the score move between forms? On the NBME 12 Step 2 CK score calculator a genuine week of review shows up as about ten points.

Not two, and not thirty. If the NBME 12 Step 2 CK score calculator has not moved across two sittings a week apart, change the method, not the date.

The form with the same starting point is the natural comparison for the NBME 12 Step 2 CK score calculator.

The next Step 2 CK form continues the sequence. Plan the gap before the next form.

No score report is needed. Count the questions you missed out of 200 and the NBME 12 Step 2 CK score calculator returns the estimate directly.

Percent correct works identically, and a known score runs the NBME 12 Step 2 CK score calculator backwards into a miss count.

What the NBME 12 Step 2 CK score calculator cannot capture is everything outside the answer sheet.

Sat untimed, spread over two evenings, or with notes open, and the NBME 12 Step 2 CK score calculator describes a different session.

Content sampling and single-test variance are invisible to the NBME 12 Step 2 CK score calculator as well.

The NBME 12 Step 2 CK score calculator is not affiliated with, endorsed by, or sponsored by the NBME or the USMLE program.

Frequently asked questions

Straight answers about what this estimate can and cannot tell you.

How many wrong answers pass on the NBME 12 Step 2 CK score calculator?

The NBME 12 Step 2 CK score calculator puts the pass line at 75 wrong out of 200, which is 218 and 62.5% correct.

Seventy-six wrong returns 217. The NBME 12 Step 2 CK score calculator runs six points each way, so anything below 225 leaves the question open.

Is the NBME 12 Step 2 CK score calculator the same as NBME 10?

On the modelled curves they are almost identical. Both start from 300.18, and the NBME 12 Step 2 CK score calculator falls one hundredth of a point slower per question.

The NBME 12 Step 2 CK score calculator never sits more than two points from Form 10, and at 75 misses both land on 218.

How do I get from 190 to 218 on the NBME 12 Step 2 CK score calculator?

A converted 190 is about 101 misses out of 200 on the NBME 12 Step 2 CK score calculator. Reaching 218 means missing 75.

That is 26 more correct answers, about thirteen percentage points. The NBME 12 Step 2 CK score calculator turns a score gap into a study target.

Does retaking give a reliable NBME 12 Step 2 CK score calculator result?

No. A repeated form measures recall of specific items alongside knowledge, so the NBME 12 Step 2 CK score calculator reads high for reasons that will not carry to test day.

Take each reading on an unseen paper. Already used Form 12? Move to another form and compare NBME 12 Step 2 CK score calculator estimates, not percentages.

Can the NBME 12 Step 2 CK score calculator work offline from misses?

Yes. The NBME 12 Step 2 CK score calculator needs only the count of questions missed out of 200, so a tally from your own answer sheet is enough.

Percent correct returns the same estimate through the same fitted line, and a three-digit score reverses the NBME 12 Step 2 CK score calculator into a miss count.

When should the NBME 12 Step 2 CK score calculator be used in prep?

As a second or third reading, with at least a week of study between the NBME 12 Step 2 CK score calculator and the form before it.

The NBME 12 Step 2 CK score calculator is tight enough to detect a real change and early enough that a weak result is still actionable. Keep the final forms for the last fortnight.

Cross-check this estimate against another form, or read how the models are built.

Share this calculator

Send it to a study partner sitting the same form, or print a copy once you have run your numbers.

Seventy-five wrong still reads 218 on Form 12, and the NBME 12 Step 2 CK score calculator is free.

Not affiliated with, endorsed by, or sponsored by the NBME® or USMLE®. Educational estimates only.