C-ONQS Pass Rate 2026: What the Data Shows

The Headline Number: 71% Among 155 Candidates

The National Certification Corporation (NCC) publishes annual statistics for its certification exams. For the Obstetric and Neonatal Quality and Safety (C-ONQS) credential, the 2025 figure is 71% passing among 155 candidates tested. That is the most recent published data point this article relies on, and it comes directly from NCC's statistics page rather than from a third-party estimate.

Roughly seven in ten first-look candidates succeeded, which places this exam in the "passable with preparation" category rather than the "most people fail" category. But a single-year figure from a small candidate pool deserves careful interpretation, which is what the rest of this article covers. If you are weighing overall difficulty, our companion piece How Hard Is the C-ONQS Exam? Complete Difficulty Guide 2026 goes deeper on what makes the questions challenging.

How to Read a Pass Rate Honestly

Small samples move more than large ones

With 155 candidates in the 2025 cohort, a swing of a handful of people changes the percentage noticeably. The C-ONQS is a specialty quality-and-safety credential taken by licensed clinicians who choose to pursue it, not a mass-market entry exam. A pool of that size can shift from year to year for reasons unrelated to exam difficulty, such as a hospital system sponsoring a group of nurses to test at once.

Self-selection raises the floor

Candidates for this credential already hold active, unencumbered licensure as an MD/DO, RN, APRN (NP, CNS or CNM), certified midwife, physician assistant, licensed social worker or respiratory therapist. Many work in perinatal quality improvement, patient safety, or unit leadership. People who register tend to have real exposure to the content, which tends to support healthier pass rates than an open-enrollment exam would produce.

Why you should check the source yourself

NCC updates its statistics annually. Before you plan around any figure, including the one here, confirm the current number on NCC's official statistics page. For a broader view of how this fits into the certification, see our hub article on the C-ONQS pass rate and what the data shows.

Why the Passing Standard Is Not a Fixed Percentage

Many candidates assume they need something like 70% or 75% of questions correct. That is not how NCC sets the bar for this exam. The C-ONQS uses a criterion-referenced ability standard with equating.

• Criterion-referenced means you are measured against a defined standard of competence, not against other test takers. Your result does not depend on how well the rest of the cohort did.
• Equating is a statistical adjustment that accounts for the fact that different versions of the exam may vary slightly in difficulty. A harder form and an easier form are placed on the same scale so that the same level of ability is required to pass either one.

The practical consequence is that you cannot reverse-engineer a "number of questions I can afford to miss." For the full explanation of what this means for you, read C-ONQS Passing Score 2026: Exactly What You Need to Pass.

Format and Mechanics That Shape Outcomes

Several structural features of the exam affect how candidates perform, and understanding them removes avoidable surprises on test day.

Three options, one best answer

With only three choices per item, guessing alone is less costly than on a four- or five-option exam, but the "single best answer" wording matters. Quality and safety questions often present several defensible actions, and you must pick the most appropriate one for the scenario. That means reading for what the question is actually asking, such as the first step, the most effective intervention, or the best measure of improvement.

Twenty-five questions you cannot identify

The 25 unscored items are mixed in with the 100 scored ones, and nothing flags which is which. Do not waste time hunting for "the trick pilot question." Answer every item as though it counts.

Pacing at two hours

Two hours across 125 questions works out to just under a minute per item. That is comfortable for knowledge-recall questions but tighter for scenario-based items that require you to weigh several plausible actions. Practice with timed sets so that the clock does not become a hidden source of lost points. Our guide to C-ONQS exam dates, testing windows and scheduling covers the logistics of booking within your 90-day window.

Who Sits for This Exam

The C-ONQS draws from a broad range of perinatal and neonatal professionals. Per the 2026 Registration Catalog, the eligible licensure categories include physicians (MD/DO), registered nurses, advanced practice nurses (nurse practitioners, clinical nurse specialists and certified nurse-midwives), certified midwives, physician assistants, licensed social workers and respiratory therapists. Licensure must be active and unencumbered in the US or Canada. There is no minimum practice-experience requirement.

Because there is no experience minimum, a newer clinician can technically sit for the exam. But the content assumes you can reason about unit-level processes, safety events and improvement measurement, so candidates with hands-on quality or patient safety exposure generally have an easier time. For a full walkthrough, see C-ONQS Requirements 2026: Eligibility, Prerequisites & How to Qualify.

Where Candidates Lose Points: The Five Domains

NCC publishes the content outline for this exam in its 2026 Candidate Guide, and the five domain headings below are official exam-content domains. Knowing the weights lets you allocate study time rationally. For a detailed breakdown of each, see C-ONQS Exam Domains 2026: Complete Guide to All 5 Content Areas.

The 4% domain still deserves a glance

Professional and Ethical Issues is explicitly 4% in the page 7 graph of the Candidate Guide. You may notice slightly inconsistent presentations elsewhere in the document: page 8 drops the digit, and the sample report on page 19 combines ethics with assessment into a 29% figure. Neither changes the five-domain blueprint. The sensible reading is that ethics is a small slice, so it should not consume large amounts of study time, but it is also not safe to ignore entirely.

Retake Rules and the Cost of a Miss

Part of understanding the pass rate is understanding what happens if you fall in the roughly 29% who did not pass in 2025. NCC's rules are straightforward but unforgiving on cost:

• A retest application requires a 45-day wait.
• You pay the full fees again, including the nonrefundable application fee.
• You may make at most two attempts at the same exam per calendar year.

The initial total is US$210, so a failed attempt effectively doubles your outlay if you retest. That makes a thoughtful first attempt worth more than a rushed one. We break down every line item in C-ONQS Certification Cost 2026: Complete Pricing Breakdown.

A Domain-Weighted Prep Plan

Rather than a generic schedule, allocate your weeks by domain weight and by the logical order in which the content builds. The exam follows a quality-improvement arc: assess, develop, integrate, evaluate. Studying in that sequence mirrors how the questions reason. Our full C-ONQS Study Guide 2026: How to Pass on Your First Attempt expands on resources and technique.

For a compact refresher in the final days, our C-ONQS cheat sheet condenses the must-know facts. You can also test yourself on exam-style items using the C-ONQS practice tests to see how your performance breaks down by domain before you commit to a test date.

After You Pass: Validity and Renewal

Passing is not the end of the process. The credential is valid for three years. To renew, you need:

• 15 specialty continuing education contact hours
• Eligible, active licensure
• A maintenance application plus a US$50 maintenance fee

Two caveats are easy to miss. Life-support-program CE, such as certain resuscitation courses, does not qualify toward this specialty's requirement. And purchasing CE does not automatically renew your certification; you still need to submit the maintenance application and fee. Details are in NCC's 2026 C-ONQS Maintenance Catalog.

If you are deciding whether the effort is justified, read Is the C-ONQS Certification Worth It? Complete ROI Analysis 2026 and, for the career side, C-ONQS Jobs. For a refresher on what the credential represents, see What Is C-ONQS Certification?

Frequently Asked Questions