USMLE Step 2 CK Score & Percentile Chart (2026, Official Data)
The current official USMLE norm table places a Step 2 CK score of 240 at the 23rd percentile, 250 at the 44th, 260 at the 71st, and 265 at the 83rd. These percentiles compare your score with 67,824 first-time examinees from LCME-accredited medical schools who tested between 1 July 2023 and 30 June 2026. The current minimum passing score is 218 for examinations administered on or after 1 July 2025.
- Score 240
- 23rd percentile
- Score 250
- 44th percentile
- Score 260
- 71st percentile
- Score 265
- 83rd percentile
Source: USMLE Score Interpretation Guidelines, updated 17 August 2026. Percentile ranks are updated annually, so use the reporting period shown rather than treating them as permanent conversions.
Quick Answers
- What percentile is 240 on Step 2 CK? 23rd percentile.
- What percentile is 250 on Step 2 CK? 44th percentile.
- What percentile is 260 on Step 2 CK? 71st percentile.
- What percentile is 265 on Step 2 CK? 83rd percentile.
- What is the current passing score? 218 for examinations administered on or after 1 July 2025.
How Step 2 CK Is Scored
1–300
3-Digit Scale
218
Passing Score (from 1 July 2025)
249–251
Recent National Means
Step 2 CK results are reported on a three-digit scale. The minimum passing score is 218 for examinations administered on or after 1 July 2025. The latest official national means were 249, 250 and 251 for academic years 2023–24 through 2025–26.
Official Step 2 CK Score to Percentile Table
Official percentile ranks from the USMLE norm table (first-time examinees from LCME-accredited schools, tested 1 July 2023 – 30 June 2026). Values between five-point increments are not published; any interpolation is only an estimate.
| Step 2 CK score | Official percentile rank |
|---|---|
| 275 | 98th |
| 270 | 93rd |
| 265 | 83rd |
| 260 | 71st |
| 255 | 58th |
| 250 | 44th |
| 245 | 32nd |
| 240 | 23rd |
| 235 | 15th |
| 230 | 9th |
| 225 | 6th |
| 220 | 3rd |
| 215 | 2nd |
| 210 | 1st |
Source: USMLE Score Interpretation Guidelines, updated 17 August 2026. Percentile ranks are updated annually.
Interpreting Practice Exam Scores
Use the score report and readiness guidance supplied by each assessment provider. A raw percentage correct from EndlessMed or any other question bank is not directly convertible to a three-digit Step 2 CK score, because difficulty and scoring differ by platform and form.
NBME Comprehensive Clinical Science Self-Assessment (CCSSA) reports should be interpreted using the current NBME materials and the current Step 2 CK passing standard.
What Residency Programs See
Residency programs receive your USMLE transcript, including your Step 2 CK score. How much weight a score carries varies by program and specialty.
Residency selection considers multiple factors, including clinical performance, letters of recommendation, experiences, and interviews. Program requirements vary widely, and many programs review applications holistically.
Key takeaway
Read your score alongside its official percentile and reporting period. A percentile describes how you compare with a reference group; it is not a match prediction.
Frequently Asked Questions
What percentile is 240 on Step 2 CK?
On the official USMLE norm table updated 17 August 2026, a Step 2 CK score of 240 is at the 23rd percentile.
What percentile is 250 on Step 2 CK?
A Step 2 CK score of 250 is at the 44th percentile on the official USMLE norm table updated 17 August 2026.
What percentile is 260 on Step 2 CK?
A Step 2 CK score of 260 is at the 71st percentile on the official USMLE norm table updated 17 August 2026.
What is the current Step 2 CK passing score?
The minimum passing score is 218 for examinations administered on or after 1 July 2025.
Can I retake Step 2 CK to improve a passing score?
No. USMLE does not allow an examinee to retake a previously passed Step solely to raise the score. Limited exceptions apply when an approved licensing or other recognized authority requires a retake because a prior result has exceeded an applicable time limit.
How should I interpret practice-exam results?
Use the score report and readiness guidance supplied by the assessment provider. A raw percentage from EndlessMed or another question bank is not directly convertible to a three-digit Step 2 CK score. NBME CCSSA reports should be interpreted using the current NBME materials and the current Step 2 CK passing standard.
Sources
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