- The Passing Standard: −0.32 Logits Explained
- How CAT Scoring Actually Works
- Why There's No Fixed "Number of Questions" to Pass
- Partial Credit for Multiple-Response Items in 2026
- What a Passing Performance Looks Like by Domain
- Registration, Eligibility, and Fees Tied to Your Attempt
- If You Don't Pass: Retake Rules
- Building a Study Plan Around the Logit Standard
- Frequently Asked Questions
- The passing standard is a fixed −0.32 logits ability estimate, valid through December 31, 2026.
- You'll answer 90-150 items, but only 60-120 are scored - 30 are unscored pretest questions.
- There is no fixed percentage of correct answers needed; difficulty is adaptive to your ability level.
- Starting January 2026, select-all-that-apply multiple-response items earn partial credit instead of all-or-nothing scoring.
The Passing Standard: −0.32 Logits Explained
The REx-PN does not use a raw score, a percentage, or a curve. It uses an interval scale called logits, produced by the item response theory model that underlies the computerized adaptive test (CAT). Through December 31, 2026, the passing standard for the Regulatory Exam - Practical Nurse is fixed at −0.32 logits. Your result is a single ability estimate calculated from every scored item you answered, weighted by that item's known difficulty, and compared against this line.
If your final ability estimate sits at or above −0.32 logits with the required statistical confidence, you pass. If it sits below, you don't - regardless of how many total items you answered or how the test "felt" while you were sitting it. This is fundamentally different from a fixed-form exam where you can count correct answers.
How CAT Scoring Actually Works
Each REx-PN appointment runs up to four hours, including scheduled breaks, and presents between 90 and 150 items. Thirty of those items are unscored pretest questions being trialed for future exam forms - you won't know which ones they are, so every item must be treated as if it counts. That leaves 60-120 items that actually feed your ability estimate.
The CAT algorithm selects each next item based on your performance so far. Answer correctly and the system tends to serve a harder item; answer incorrectly and it adjusts. The test ends when the algorithm is confident enough - either that you're clearly above −0.32 logits, clearly below it, or you've reached the maximum item count. This is why two candidates who both pass can finish with very different numbers of items.
Item formats include multiple choice, multiple response, fill-in-the-blank calculation, and exhibit or graphic-based questions. An on-screen calculator is provided for dosage and infusion math, and once you submit an answer you cannot go back to change it. For a full breakdown of what the test session physically feels like, see How Hard Is the REx-PN Exam? Complete Difficulty Guide 2026.
Why There's No Fixed "Number of Questions" to Pass
Candidates frequently search for a magic number - "how many questions do I need right to pass REx-PN?" There isn't one, and chasing that number will misdirect your prep. What matters is the difficulty-weighted trajectory of your answers relative to −0.32 logits, not a tally of correct responses out of 60, 90, or 120.
Two practical consequences follow:
- A shorter test isn't automatically bad news. Ending near the minimum item count can mean the algorithm reached a confident decision early, in either direction.
- Guessing strategy still matters. Because answered items can't be revisited, an unconfident guess that turns out wrong still shapes the next item's difficulty and your running estimate.
Key Takeaway
Stop counting questions. Focus your prep on being consistently accurate across all eight content domains, because the algorithm punishes uneven knowledge far more than it rewards speed.
Partial Credit for Multiple-Response Items in 2026
Effective January 2026, select-all-that-apply multiple-response items receive partial credit. Previously, these items were scored strictly right-or-wrong - select four of five correct options and miss one, and the whole item counted as incorrect. Under the updated model, partially correct selections now contribute partial value toward your ability estimate.
This is a meaningful shift for a test where multiple-response items are common in domains like Pharmacological and Parenteral Therapies and Reduction of Risk Potential, where "select all findings that indicate digoxin toxicity" style questions are typical. It rewards partial clinical reasoning rather than punishing a single missed option as harshly as a completely wrong answer.
What a Passing Performance Looks Like by Domain
The exam blueprint spreads items across eight content domains with different weight ranges. Since scoring is difficulty-weighted rather than domain-weighted in isolation, you can't "bank" points in one area to offset gaps in another - but the domains that carry the heaviest proportion of items give the algorithm more opportunities to place you precisely, so weakness there has outsized impact.
Management of Care (18-24%)
The single largest domain. Covers care coordination, delegation, prioritization, and scope-of-practice decisions for the practical nurse role.
- Know exactly what an RPN/LPN can delegate versus what requires an RN or physician
Pharmacological and Parenteral Therapies (14-20%)
The second-largest domain and heavy on calculation-style items using the on-screen calculator.
- Dosage calculations, IV rates, and medication administration safety checks appear frequently
Safety and Infection Control (10-16%)
Covers hazard reduction, use of precautions, and error-prevention protocols.
- Expect scenario items testing infection-control sequencing under time pressure
Psychosocial Integrity (8-14%)
Coping, mental health, abuse recognition, and therapeutic communication scenarios.
- Read stems carefully - the "most therapeutic response" items reward tone as much as content
For the complete breakdown of all eight domains, including the four smaller-weighted ones, see REx-PN Exam Domains 2026: Complete Guide to All 8 Content Areas.
Registration, Eligibility, and Fees Tied to Your Attempt
Before you can even schedule a sitting toward that −0.32 logit standard, you must apply to and be approved by your provincial regulator - the College of Nurses of Ontario or the British Columbia College of Nurses and Midwives - and receive exam eligibility. Only after that step can you register with Pearson Professional Assessments, which administers the exam.
- Standard registration: CAD $350, excluding local taxes
- International test-centre scheduling: adds CAD $150 plus VAT where applicable
- Changing your regulatory body or exam language after registration: CAD $50
The exam is offered in both English and French. Getting the eligibility and registration sequence right the first time avoids paying the change fee unnecessarily - the full mechanics of who qualifies and when are covered in REx-PN Requirements 2026: Eligibility, Prerequisites & How to Qualify, and a complete cost breakdown is available in REx-PN Certification Cost 2026: Complete Pricing Breakdown.
If You Don't Pass: Retake Rules
Falling short of −0.32 logits isn't the end of the road, but it does come with structured waiting periods. Candidates must wait a minimum of 60 test-free days before attempting again, and are limited to a maximum of six attempts per year. Each new attempt requires re-registering and paying applicable fees again.
CNO reported an 80.8% first-attempt pass rate in 2024 for Ontario-educated RPN exam writers specifically - a figure that excludes other Canadian-educated and internationally educated candidates, so treat it as directional rather than universal. For more context on how pass outcomes vary and what drives them, see REx-PN Pass Rate 2026: What the Data Shows.
Building a Study Plan Around the Logit Standard
Because the passing threshold rewards consistency across domains rather than mastery in one area, your final weeks of prep should mirror the blueprint's weight distribution rather than your personal preferences. Spend proportionally more time on Management of Care and Pharmacological and Parenteral Therapies since they carry the largest share of scored items, but don't neglect smaller domains - a difficulty-weighted score model still penalizes weak performance anywhere.
Management of Care + Safety and Infection Control
- Drill delegation scenarios and prioritization sequencing
- Review precaution protocols and error-prevention steps
Pharmacological and Parenteral Therapies
- Practice dosage calculations using an on-screen calculator, timed
- Review multiple-response medication questions under the 2026 partial-credit model
Psychosocial Integrity + Health Promotion and Maintenance
- Practice therapeutic-response item stems
- Layer in full-length adaptive-style practice sessions
Full Review and Mixed Practice
- Run timed mixed-domain sets to simulate unpredictable item order
- Revisit weak-domain flashcards one final time
For a structured, week-by-week walkthrough of this entire process, see REx-PN Study Guide 2026: How to Pass on Your First Attempt. Running full-length practice sessions on our REx-PN practice test platform before test day is one of the few ways to get a feel for adaptive difficulty shifts before you experience them for real.
| Scoring Element | Detail |
|---|---|
| Total items presented | 90-150 |
| Unscored pretest items | 30 |
| Scored items | 60-120 |
| Passing standard (through Dec 31, 2026) | −0.32 logits |
| Multiple-response scoring (from Jan 2026) | Partial credit awarded |
| Minimum retake wait | 60 test-free days |
| Maximum attempts per year | 6 |
Understanding exactly how tightly the exam's format, calculator use, and non-revisitable items interact with this scoring model matters as much as content review. If you're still weighing whether the credential and its scoring rigor are worth the investment relative to career outcomes, Is the REx-PN Certification Worth It? Complete ROI Analysis 2026 and REx-PN Salary Guide 2026: Complete Earnings Analysis cover that ground in detail.
Frequently Asked Questions
Yes - the −0.32 logits threshold is fixed for everyone through December 31, 2026. What varies is the specific mix of items each candidate sees, since the test is adaptive.
Not necessarily. The CAT algorithm continues presenting items until it reaches a confident ability estimate, up to 150 total items. A longer test can mean the system needs more data either way, not that you're failing.
No, but you won't know which items are unscored during the exam, so every item should be answered as though it contributes to your final logit estimate.
It doesn't change the −0.32 logits passing standard itself, but it changes how multiple-response items feed into your ability estimate - partially correct selections now contribute value instead of scoring as fully incorrect.
You must wait a minimum of 60 test-free days before your next attempt, and you're limited to six attempts per calendar year.