- The Number: A Scaled Score of 350
- Why 350 Is Not a Percentage
- Anatomy of the 150-Question Exam
- Where Your Scored Questions Come From
- What the Pass Rate Says About the Cut Score
- Test-Day Rules That Affect Your Score
- If You Fall Short: Retake Rules
- A Domain-Based Plan Aimed at 350
- After You Pass: Certification Length and Renewal
- Frequently Asked Questions
- Passing the GERO-BC requires a scaled score of at least 350 on a 500-point scale.
- The exam has 150 questions, but only 125 are scored; 25 are unscored pretest items.
- The 350 passing score is not a percentage-correct requirement, so you cannot convert it to a raw number.
- Professional Foundation is the largest domain at 35% of the exam, with Planning, Implementation, and Evaluation at 34%.
The Number: A Scaled Score of 350
If you are preparing for the Gerontological Nursing Certification (GERO-BC) offered by the American Nurses Credentialing Center (ANCC), the passing standard is simple to state: you need a scaled score of at least 350 on a scale that tops out at 500. That is the whole threshold. There is no separate requirement to pass each domain individually, and there is no bonus for scoring far above 350. A 350 and a 480 both earn the Gerontological Nurse - Board Certified credential.
What trips candidates up is not the number itself but what it means. Many people instinctively map 350 out of 500 to 70%, then plan to "get 70% of the questions right." That shortcut feels logical, but it is not how ANCC reports results, and it can leave you with a distorted study target. The next section explains why.
Why 350 Is Not a Percentage
A scaled score is a transformed score. Your raw performance on the scored questions is converted onto the 100-to-500 style reporting scale so that results remain comparable from one exam form to another. Because different forms of the exam can vary slightly in difficulty, the conversion keeps the standard consistent: the competence level represented by 350 stays the same regardless of which form you happened to receive.
The practical consequences for you:
- You cannot count backward from 350 to a number of correct answers. ANCC does not publish a raw-score-to-scaled-score conversion table, so any website claiming "you need exactly X correct answers" is guessing.
- Do not use your practice-test percentage as a direct prediction. A practice score is a useful signal about readiness, but it is not the same measurement as your scaled score. Read our GERO-BC pass rate breakdown for how to think about readiness signals responsibly.
- Aim for comfortable mastery, not the minimum. Because you cannot know how many questions you can miss, the safest plan is to build strength across all three domains rather than trying to "just scrape by."
For a fuller look at how demanding the exam feels in practice, see How Hard Is the GERO-BC Exam?
Anatomy of the 150-Question Exam
Your score is calculated from a specific slice of the exam, so it helps to understand the structure before you worry about the threshold.
| Exam Feature | GERO-BC Detail |
|---|---|
| Certifying body | American Nurses Credentialing Center (ANCC), part of ANA Enterprise |
| Credential awarded | Gerontological Nurse - Board Certified (GERO-BC) |
| Format | Computer-based, multiple-choice, at Prometric test centers |
| Total questions | 150 |
| Scored questions | 125 |
| Unscored pretest questions | 25 (indistinguishable from scored items) |
| Time for questions | 3 hours |
| Passing standard | Scaled score of 350 or higher (max 500) |
| Guessing penalty | None |
The 25 unscored questions
Of the 150 questions you will see, 25 are pretest items that ANCC is evaluating for future exams. They do not affect your score, but you cannot tell which ones they are. That is actually good news for your mindset: if you hit a question that seems unusually obscure or oddly worded, it may be one of the unscored items. Do not let a single baffling question derail your pacing or confidence. Make your best selection, mark it if you wish, and keep moving.
No penalty for guessing
Because there is no deduction for wrong answers, every question should receive an answer. You can mark questions and return to them within the testing window, so a smart approach is to answer everything on your first pass, flag the uncertain ones, and use leftover time to revisit them. Leaving a blank is never better than an educated guess.
Where Your Scored Questions Come From
The 125 scored questions are distributed across three weighted domains in the current ANCC Test Content Outline. Knowing the weights tells you where the points live, even though you cannot translate them into an exact passing count.
Domain 3: Professional Foundation (35%)
The largest slice of the exam, with 44 scored questions. This domain covers the professional and role-related knowledge that underpins safe, ethical, evidence-informed gerontological nursing.
- Largest single source of scored points, so weakness here is costly
- Review the professional-role, ethical, and practice-foundation content in the current outline
- Use the ANCC reference list as a preparation aid, not as a second blueprint
Domain 2: Planning, Implementation, and Evaluation (34%)
Worth 42 scored questions. This is where clinical judgment about care of older adults shows up: choosing interventions, coordinating care, and judging whether those interventions worked.
- Expect scenario-style questions that ask what the nurse should do next
- Practice distinguishing the best intervention from merely acceptable ones
- Evaluation questions test whether you can recognize when a plan needs revision
Domain 1: Assessment and Diagnosis (31%)
Worth 39 scored questions. This domain focuses on gathering and interpreting data about the older adult and identifying the relevant problems.
- Questions reward recognizing atypical presentations in older patients
- Be ready to prioritize which findings demand immediate attention
- Comprehensive geriatric assessment thinking is central to this domain
Notice how evenly the weight is spread: 31%, 34%, and 35%. No domain is small enough to ignore. A candidate who neglects the "smallest" domain still faces 39 scored questions from it. For a deeper walkthrough of every content area, see the complete GERO-BC exam domains guide.
What the Pass Rate Says About the Cut Score
ANCC's 2025 certification data reports a first-time pass rate of 63%, based on 380 passing out of 599 first-time candidates. As of December 31, 2025, there were 5,321 certified Gerontological Nursing certificants.
Read that figure carefully. A 63% first-time rate means roughly six in ten first-attempt candidates cleared the 350 standard, and roughly four in ten did not. The cut score is meaningful: it is not a formality, and it is not so punishing that most candidates fail. It rewards candidates who prepare against the actual blueprint and penalizes those who rely on general nursing experience alone.
That distinction matters because gerontological nurses are often experienced clinicians. Experience is a strong foundation, but the exam tests standardized knowledge and the specific way ANCC frames correct answers. Candidates who skip structured review sometimes find that bedside instinct and board-exam answer logic are not identical. Our pass rate analysis explores what the data does and does not tell us.
Test-Day Rules That Affect Your Score
You can protect your score by knowing the testing conditions before you arrive at the Prometric center.
- Closed book: Personal books, papers, calculators, and electronic devices are prohibited.
- Dry-erase board: The testing center supplies a dry-erase board for notes, so practice working problems without paper.
- Breaks do not stop the clock: The three-hour question-answering timer keeps running if you step away, so plan to use breaks sparingly.
- Mark and revisit: You may flag questions and return to them, which supports a two-pass pacing strategy.
- Testing window: After your application is approved, you receive a 120-day window to test, so schedule with your preparation timeline in mind. See GERO-BC exam dates and scheduling for planning details.
Key Takeaway
Because breaks do not pause the three-hour timer, do timed practice in a single sitting. Pacing roughly 150 questions in 180 minutes works out to a little over a minute per question, so train yourself to decide and move on.
If You Fall Short: Retake Rules
Missing 350 is not the end of the road. ANCC allows retesting, with two guardrails: you must wait 60 calendar days between attempts, and you may not test more than three times in any 12-month period.
Financially, a retake means paying again. The initial application fee is USD 395 for nonmembers, USD 295 for ANA members, or USD 340 for GAPNA members, and that includes a USD 140 nonrefundable administrative fee. Because retest costs add up, investing in solid preparation the first time is usually the more economical choice. Review the full GERO-BC certification cost breakdown to budget accurately.
A Domain-Based Plan Aimed at 350
Since you cannot target an exact number of correct answers, structure your preparation around the blueprint weights. This plan allocates time in proportion to where the scored questions come from, and it front-loads the largest domain.
Professional Foundation (35%)
- Work through the professional-role, ethics, and practice-foundation content in the current outline
- Skim the ANCC reference list to identify weak spots
- Take a diagnostic quiz to see where you start
Planning, Implementation, and Evaluation (34%)
- Practice scenario questions that ask for the best next action
- Drill intervention selection and evaluation of outcomes in older adults
Assessment and Diagnosis (31%)
- Focus on interpreting findings and recognizing atypical presentations
- Practice prioritizing among competing assessment data
Full-Length Timed Practice
- Complete timed sets mirroring the 150-question, three-hour format
- Revisit the domains where your practice results are weakest
For a more detailed study approach, see the GERO-BC study guide, and when you are ready to test yourself under realistic conditions, try the GERO-BC practice tests. A one-page refresher is also available in the GERO-BC cheat sheet.
After You Pass: Certification Length and Renewal
Once you reach 350, your certification lasts five years. Renewal applications may be submitted up to one year before expiration. Under the current rules for applications submitted before February 1, 2027, you need an active RN license, 75 relevant continuing education contact hours (with at least 60 formally approved), and completion of one professional-development category in full. Applications submitted on or after February 1, 2027 follow a revised handbook that requires 75 relevant CE hours, all accredited or formally approved, plus one complete qualifying activity in an approved pathway.
Renewal fees are USD 350 for nonmembers, as low as USD 250 for ANA members, or USD 295 for GAPNA members. The 25-hour pharmacology requirement you may have heard about applies to APRN renewal and does not apply to GERO-BC.
Eligibility to sit for the exam in the first place requires an active RN license, two full-time-equivalent years of RN practice, at least 2,000 hours of gerontological nursing clinical practice in the preceding three years, and 30 gerontological nursing CE hours in the preceding three years. Graduate APRN training is not required. Details are in the GERO-BC requirements guide.
Frequently Asked Questions
You need a scaled score of at least 350 on a scale with a maximum of 500. It is a scaled score, not a percentage of questions answered correctly.
ANCC does not publish a fixed number. Your result is based on the 125 scored questions and converted to a scaled score, so there is no official raw-score cutoff you can count toward.
No. The 150-question exam includes 25 unscored pretest items that look identical to scored ones. Only the 125 scored questions determine whether you reach 350.
You may retest after waiting 60 calendar days, with no more than three attempts in any 12-month period. A new fee applies for each attempt.
No. Answer every question, since a blank earns nothing. You can mark uncertain items and return to them before time expires.
Reaching a scaled 350 is less about hitting a magic raw number and more about showing consistent competence across Assessment and Diagnosis, Planning, Implementation, and Evaluation, and Professional Foundation. Learn the blueprint, rehearse the format, and let the weighted domains guide your hours.