The NCLEX uses a computer adaptive testing model with three official decision rules to determine whether a candidate passes or fails. These rules are applied in real time as you answer questions, and the exam ends as soon as one of the rules is satisfied.
1. The 95 Percent Confidence Interval Rule
This is the most common way the NCLEX ends. The computer continuously estimates your ability level based on your responses. If, at any point between 85 and 150 questions, the algorithm determines with 95 percent confidence that your ability is clearly above or below the passing standard, the exam stops and a pass or fail decision is made.
2. The Maximum Length Exam Rule
If your ability level is very close to the passing standard, the computer may need the full set of questions to make a determination. In this case, you will answer all 150 questions. At the end, the final ability estimate is compared to the passing standard. If your final estimate is above the standard, you pass—even if you answered 150 questions.
3. The Run Out of Time Rule
If you do not complete the minimum 85 questions within the 5 hour time limit, you automatically fail. However, if you answer at least 85 questions but run out of time before reaching 150, the computer reviews your last 60 ability estimates. If at least 50 percent of those estimates are above the passing standard, you pass. Otherwise, you fail.
These rules ensure that every candidate receives a fair, accurate, and individualized assessment based on clinical judgment and competency—not just the number of questions answered.
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For official details on NCLEX scoring methodology, visit the National Council of State Boards of Nursing: www.ncsbn.org/nclex .