UWSA 2 to Step 2 CK: Free Score Predictor
UWSA 2 is the most accurate UWorld self-assessment for Step 2 CK. We subtract the known +2 point inflation and weight your prediction with any other inputs you have.
Convert UWSA 2 to Step 2 CK
Pick Step 2 CK and add your UWSA 2 score. NBMEs tighten the confidence interval substantially.
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UWSA 2 → Step 2 CK conversion table
Bias-corrected Step 2 CK estimate plus percentile rank for matched US MD seniors.
| UWSA 2 | Step 2 CK | Percentile | Match competitiveness |
|---|---|---|---|
| 210 | 211 | 5th | At risk |
| 220 | 221 | 14th | Likely pass |
| 230 | 231 | 30th | Pass |
| 240 | 240 | 52th | Average |
| 245 | 244 | 64th | Above avg |
| 250 | 248 | 76th | Strong |
| 255 | 252 | 86th | Competitive |
| 260 | 256 | 92th | Top tier |
| 265 | 260 | 97th | Top tier |
| 270 | 263 | 99th | Elite |
* UWSA 2 over-predicts by ~2 points; the Step 2 CK column already applies that correction. 95% CI = ±5 pts when used alongside ≥ 2 NBMEs.
Why UWSA 2 is your best UWorld signal
- Re-equated in 2024 against a current US MD + IMG cohort
- Separate internal source treatment from UWSA 1
- Question style closely mirrors current Step 2 CK shelf items
- Independent estimate; no published holdout error rate
UWSA 2 → Step 2 CK FAQs
How accurate is UWSA 2 for Step 2 CK?+
A reproducible validation dataset is not currently published for this calculator, so we do not claim a verified UWSA 2 error rate. Use UWSA 2 with another recent assessment and interpret the full range.
When should I take UWSA 2?+
Use it late enough to reflect current preparation while leaving time to act on the result. Follow it with a fresh Step 2 CK CCSSA or Free 120 if your plan allows.
Why does UWSA 2 over-predict less than UWSA 1?+
We do not publish evidence for a universal fixed difference. The calculator treats UWSA 1 and UWSA 2 separately as an internal modelling choice.
Should I trust UWSA 2 more than an NBME CCSSA?+
Do not rank them from an unpublished accuracy table. Read the official CCSSA report first, then use UWSA 2 as another signal. Agreement across recent assessments is more useful than a fixed hierarchy.
What UWSA 2 score predicts a 250 Step 2 CK?+
There is no official one-to-one UWSA 2 conversion. Enter the score as one input and compare the resulting range with a recent CCSSA or Free 120 result.