NCLEX-RN · Learn · 2 November 2026 · 5 min read
NCLEX CAT pass rules: how the adaptive exam decides pass or fail
How NCLEX adaptive testing works: 85 to 150 items in five hours, the 95% confidence rule, the maximum-length and run-out-of-time rules, and exam length.
The NCLEX-RN is a computerized adaptive test (CAT). After every answer, the computer re-estimates your ability and picks the next item at a level you should find challenging. The exam ends, and a pass or fail is decided, by one of three rules: the 95% confidence interval rule (the most common), the maximum-length rule at 150 items, or the run-out-of-time rule when the five hours are up. You get at least 85 and at most 150 items, and the length of your exam on its own tells you nothing about whether you passed.
This guide explains how CAT selects items, how each stopping rule works and what it means for how you take the test.
The exam at a glance
| Feature | Detail |
|---|---|
| Items | Minimum 85, maximum 150 |
| Time | 5 hours, including the introduction screen and all breaks |
| Minimum exam | 52 scored content items, 18 case-study items (three case studies), 15 unscored pretest items |
| Breaks | Optional; offered after about 2 hours and about 3.5 hours; the clock keeps running |
| Going back | Not possible once you confirm an answer |
| Passing standard | 0.00 logits for the NCLEX-RN, through March 31, 2029 |
How CAT chooses each item
A traditional fixed-length test gives everyone the same questions, and your percentage correct is your result. CAT works differently. NCSBN says each item is chosen using three criteria:
- Content: the item comes from the content area that keeps your exam in line with the test plan percentages, including the three case studies and about 10% stand-alone clinical judgment items.
- Difficulty: the item is one you are expected to find challenging, based on your current ability estimate. That estimate is recalculated after every answer, using all your previous responses and the difficulty of those items.
- Exposure: a repeat candidate does not see the same item again in the current item pool.
Because items are targeted to your ability, NCSBN says candidates should find each item challenging. Feeling stretched is the design working, not a sign you are failing.
The three pass/fail rules
Rule 1: the 95% confidence interval rule
This is the most common way the exam ends. Once you have answered at least the minimum number of items, the computer stops as soon as it is 95% certain that your ability is clearly above or clearly below the passing standard.
Rule 2: the maximum-length exam rule
Some candidates' ability is very close to the passing standard, so the computer cannot reach 95% certainty. In that case, items continue until the maximum of 150. The computer then ignores the confidence rule and looks only at your final ability estimate: at or above the passing standard is a pass; below it is a fail.
Rule 3: the run-out-of-time rule
If time runs out before the computer has reached a decision:
- if you have answered fewer than 85 items, the result is a fail;
- if you have answered at least 85, the result is decided by your final ability estimate, as in rule 2.
What this means for you
Exam length is not a signal
NCSBN states plainly that the length of your exam is not an indication of a pass or fail. A candidate can pass at 85 items or at 150, and fail at either. Do not try to read your result from when the screen goes blank.
Pace matters
The run-out-of-time rule is the one you can control. Five hours includes breaks, and the clock does not stop. NCSBN's advice is to keep a reasonable pace and read each item carefully. There is no time limit on a single item, but spending too long on a few can leave you short at the end.
You cannot skip or go back
Items appear one at a time. You can change your answer before you confirm it, but once you move on you cannot return, and every item must be answered. If you are unsure, consider all the options and give your best answer.
Similar items are not a second chance
NCSBN notes that you may sometimes see an item that seems similar to an earlier one. This can happen because the content overlaps, or because one is an unscored pretest item. It does not mean you got the first one wrong. Answer each item on its own merits.
Pretest items look like the rest
Every exam has 15 pretest items. They are unscored, but they look the same as scored items, so you cannot tell them apart. Treat every item as if it counts.
About the passing standard
The passing standard is the minimum ability NCSBN considers necessary for safe and effective entry-level nursing practice. NCSBN's Board of Directors re-evaluates it every three years. In December 2022 the Board voted to keep the NCLEX-RN standard at 0.00 logits through March 31, 2029. There is no fixed percentage of candidates who pass or fail.
Why our practice gives a percentage
Our practice tests are fixed length, not adaptive, so they cannot estimate your ability the way CAT does. Instead, they give a percentage and a breakdown by client needs category, scored with the NCSBN partial-credit rules. They never claim a pass or fail.
Use them to build skills and stamina:
- Case-study practice: practice tests 1, 2 and 3 each have a tabbed chart and six items in clinical judgment order.
- Mixed sets: practice test 4 and practice test 5 have 60 items each in every format.
- Category drills: pick your weakest area from the client-needs pages and drill it.
Read our guides to Next Generation item types and scoring and the eight client needs categories. Everything is on the NCLEX-RN hub.
Key points
- 85 to 150 items in five hours, breaks included.
- Most exams end under the 95% confidence rule.
- Close to the standard: up to 150 items, final estimate decides.
- Out of time with fewer than 85 answered: fail.
- Exam length says nothing about the result.
Official sources: NCSBN 2026 NCLEX-RN Test Plan (effective April 1, 2026 to March 31, 2029), the Computerized Adaptive Testing and Passing Standard pages on nclex.com, the NCLEX FAQs and the 2026 NCLEX Candidate Bulletin, read on 1 November 2026. Portions copyrighted by the National Council of State Boards of Nursing, Inc. All rights reserved.