Question 1

How accurate is NBME 14 for predicting Step 2 CK?

Accepted Answer

Community data for NBME 14 is more limited than for NBME 13, which has accumulated the most score-pair reports on r/step2 and SDN. Available data suggests NBME 14 overpredicts actual Step 2 CK scores by approximately 3–5 points — comparable to NBME 13's ~3-point average overprediction. No peer-reviewed predictive accuracy study exists for any Step 2 CK practice assessment (unlike Step 1's Seal et al. 2020, Cureus, PMC7198101). Subtract 3–5 pts for a conservative estimate, and cross-reference with NBME 13 or UWSA 2 before scheduling.

Question 2

What makes NBME 14 different from NBME 13?

Accepted Answer

NBME 13 is the more established predictor with a larger body of community score-pair data (~3 pts overprediction, well-characterized). NBME 14 offers two distinct additions: (1) updated clinical content reflecting 2025 guidelines and drug approvals that post-date NBME 13's content, and (2) the same long HPI-format question stems as the real Step 2 CK exam. NBME 13 is your primary scheduling signal; NBME 14 adds format fidelity and guideline currency. Use them in sequence: NBME 13 in Week 6, NBME 14 in the following weeks.

Question 3

Should I take both NBME 13 and NBME 14?

Accepted Answer

Yes, if time permits. NBME 13 should come first (Week 6) as your primary predictive benchmark. NBME 14, taken in the following 1–2 weeks, adds two things NBME 13 cannot: exposure to 2025-updated clinical content, and additional high-fidelity format practice. Optimal late-dedicated sequence: NBME 13 (Week 6) → NBME 14 (Weeks 7–8) → NBME 15 (optional, 2026 content currency) → UWSA 2 (final 7–10 days, primary scheduling signal). If you must choose, NBME 13 is the higher-priority scheduling tool; NBME 14 is the higher-priority content tool.

Question 4

When is the best time to take NBME 14?

Accepted Answer

NBME 14 is best taken in the final 2–3 weeks of dedicated study, after completing NBME 13 in Week 6. Take all 200 questions in blocks that simulate real testing conditions. Note: as of May 2026, the real Step 2 CK exam uses 16 × 30-minute blocks, while NBME 14 uses the older block format — this format mismatch does not affect score prediction, but supplement with USMLE test delivery software tutorials for actual block-pacing practice.

Question 5

What does "long HPI-format question stems" mean for NBME 14?

Accepted Answer

HPI stands for History of Present Illness — the clinical narrative that describes a patient's symptoms, timeline, and relevant history. NBME 14 uses multi-paragraph question stems that mirror the full-length clinical vignettes on the real Step 2 CK exam. You must synthesize multiple pieces of clinical information before selecting the next best management step. Earlier NBME forms (NBME 9–12) typically use shorter stems. This format fidelity makes NBME 14 particularly valuable for calibrating your reading speed and reasoning flow under realistic cognitive load.

Question 6

How does the May 2026 Step 2 CK format change affect NBME 14?

Accepted Answer

As of May 7, 2026, Step 2 CK changed to 16 × 30-minute blocks (18–20 questions each), maintaining the same 9-hour total. NBME 14 uses the older 200-question block structure. This format mismatch does not affect score prediction — the formula is score-based, not format-based. However, to practice block pacing under the new 30-minute block structure, use the USMLE's free test delivery software tutorial alongside NBME 14.

Wrong Answers	Predicted Score	Signal
15	~283	Exceptional — competitive specialty territory
25	~272	Strong — well above competitive cutoff
35	~261	Good — above 240 competitive threshold
50	~245	Solid — within competitive specialty range
60	~234	Above safe zone (230+) — ready for most specialties
70	~224	Near safe zone — borderline for competitive programs
75	~218	Near passing threshold — borderline
76+	<218	Below passing — do not schedule

	NBME 13	NBME 14	NBME 15	UWSA 2
Slope (pts/wrong)	1.07	1.08	1.10	1.08
Intercept	298.80	299.20	300.50	280.00
Questions	200	200	200	160
Recommended timing	Week 6	Final 2–3 weeks	Final 2–3 weeks	Final 7–10 days
Avg. overprediction	~3 pts	~3–5 pts (limited data)	Insufficient data	~5 pts
Content vintage	Classic reasoning	2025 guidelines	2026 guidelines	UWorld-style
Question format	Long HPI	Long HPI (real exam format)	Long HPI	UWorld-style
Primary use	Scheduling check	Format fidelity + 2025 content	2026 currency	Final scheduling signal
Data source	Community	Community (limited)	Community (limited)	Community

Wrong	Correct	% Correct	Predicted Score	Pass Prob
0	200	100%	299	99.9%
5	195	97.5%	294	99.9%
10	190	95%	288	99.9%
15	185	92.5%	283	99.9%
20	180	90%	278	99.9%
25	175	87.5%	272	99.9%
30	170	85%	267	99.9%
35	165	82.5%	261	99.9%
40	160	80%	256	99.9%
45	155	77.5%	251	99.7%
50	150	75%	245	99.2%
55	145	72.5%	240	98.1%
60	140	70%	234	94.7%
65	135	67.5%	229	87.9%
70	130	65%	224	74.6%
75	125	62.5%	218	50%
80	120	60%	213	28.9%
85	115	57.5%	207	12.1%
90	110	55%	202	5.3%
95	105	52.5%	197	2.2%
100	100	50%	191	0.8%
105	95	47.5%	186	0.3%
110	90	45%	180	0.1%
115	85	42.5%	175	0.1%
120	80	40%	170	0.1%
125	75	37.5%	164	0.1%
130	70	35%	159	0.1%
135	65	32.5%	153	0.1%
140	60	30%	148	0.1%
145	55	27.5%	143	0.1%
150	50	25%	140	0.1%
155	45	22.5%	140	0.1%
160	40	20%	140	0.1%
165	35	17.5%	140	0.1%
170	30	15%	140	0.1%
175	25	12.5%	140	0.1%
180	20	10%	140	0.1%
185	15	7.5%	140	0.1%
190	10	5%	140	0.1%
195	5	2.5%	140	0.1%
200	0	0%	140	0.1%

NBME 14 Score Calculator2025 Guidelines · HPI-Format Fidelity — Final Prep Checkpoint

Why NBME 14 Belongs in Your Step 2 CK Final Prep

NBME 14 Score Benchmarks — Step 2 CK

NBME 14 vs Other Late-Dedicated Forms — Step 2 CK

NBME 14 Score Conversion Table — Step 2 CK

About NBME 14

Other Step 2 CK Practice Exams

NBME 14 Step 2 CK Calculator — FAQ