UWorld Self-Assessment explained
What the UWorld SA actually measures, how to interpret 'High' vs 'Very High,' and how it correlates with real NCLEX outcomes.
UWorld Self-Assessments are the most respected predictor in NCLEX prep. Here's what the categorical scores actually mean.
The scoring tiers
Very High, High, Borderline, Low, Very Low. The category reflects predicted probability of passing the real NCLEX on the next attempt. UWorld doesn't publish exact percentages but the rough mapping is: Very High ~92%+, High ~80-92%, Borderline ~60-80%, Low ~40-60%, Very Low <40%.
How to interpret one SA
Two consecutive SAs in 'High' or 'Very High' is a real readiness signal. A single SA in 'High' with prior in 'Borderline' is improvement but not yet ready. Single SAs have 10-15 point variance from day to day; don't trust just one.
When to take SAs
Most students get 2-3 with their UWorld subscription. Sit one at week 1 (baseline), one mid-runway, one 5-7 days before test day. Don't take them all in week 1, you lose the trajectory signal.
Cost and value
Included with most UWorld subscriptions. Worth taking even if you primarily use a different question bank, the predictive validity is well-established.
Frequently asked
Should I take a UWorld SA if I don't use UWorld?
If budget allows, yes. You can sometimes buy a single SA without a full UWorld subscription. The predictive signal is the most cited in NCLEX prep.
Does 'Very High' guarantee a pass?
No. 'Very High' historically correlates with ~92-95% real pass rate. That's strong but not absolute.
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