- Why CHSOS Pass Rate Data Is Hard to Pin Down
- What the Passing Standard Actually Means
- How the Exam Blueprint Shapes Difficulty
- Who Sits for CHSOS and Why That Matters
- Format Factors That Influence Outcomes
- Where Candidates Typically Lose Points
- A Focused Prep Timeline Built Around the Blueprint
- Renewal and Long-Term Standing
- Frequently Asked Questions
- SSH does not publish an official CHSOS pass rate, so the "data" is really the exam mechanics.
- Passing requires a scaled score of 700, not a fixed percentage of the 100 scored items.
- Simulation Technology Operations carries 35% of the blueprint - the single biggest scoring lever.
- There is no penalty for guessing, so every one of the 115 questions should get an answer.
Why CHSOS Pass Rate Data Is Hard to Pin Down
Anyone searching for a single official CHSOS pass rate number will come up short. The Society for Simulation in Healthcare (SSH), which administers the credential through its Certification Council using SMT and Prometric for exam delivery, does not publish a public pass-rate figure the way some larger certification bodies do. That absence of a headline statistic is itself useful information: it means the smartest way to evaluate your odds is to study the mechanics SSH does disclose - the scoring model, the blueprint weighting, and the eligibility gate - rather than chase a number that doesn't exist.
This article breaks down exactly those mechanics so you can reason about difficulty and readiness using real, published facts instead of guesswork. For a deeper look at how tough the exam feels in practice, pair this with How Hard Is the CHSOS Exam? Complete Difficulty Guide 2026.
What the Passing Standard Actually Means
The CHSOS exam is a two-hour, computer-based test made up of 115 four-option multiple-choice questions. Of those, 100 are scored and 15 are unscored pretest items used to evaluate future questions - you won't know which is which, so every question deserves full attention. Passing requires a scaled score of 700, which is not the same as needing 70% raw correct answers. Scaled scoring adjusts for the difficulty of the specific question set a candidate receives, so the number itself isn't a literal percentage.
One structural detail matters more than most candidates realize: there is no penalty for guessing. Leaving an answer blank has zero upside compared to picking a choice, even an educated one. This single fact should shape your entire test-day strategy - flag hard items, keep moving, and return to guess strategically rather than leaving anything unanswered. For the full breakdown of how scaled scoring works and what it implies for study targets, see CHSOS Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
Because there's no guessing penalty, never leave a question unanswered - mark it, move on, and circle back with your best guess if time runs short.
How the Exam Blueprint Shapes Difficulty
The 2024 examination content outline, built from the 2022-2023 practice analysis, splits the exam into five domains with very different weights. That imbalance is the closest thing to a difficulty map that SSH gives candidates, and it should drive your entire preparation sequence.
Domain 1: Concepts in Healthcare as Applied to Simulation (10%)
Foundational healthcare knowledge as it intersects with simulation-based education - anatomy, physiology, and clinical context enough to support realistic scenarios.
- Lightest domain by weight, but still worth mastering early since it underpins the others
Domain 2: Simulation Technology Operations (35%)
The largest domain by far, covering manikin operation, AV systems, task trainers, moulage, and troubleshooting during live scenarios.
- More than a third of scored items live here - under-preparing this domain is the single biggest risk to your score
Domain 3: Healthcare Simulation Practices, Principles, and Procedures (25%)
Scenario design execution, prebriefing and debriefing support, safety protocols, and day-of-simulation logistics.
- Second-largest domain; overlaps operationally with Domain 2 but focuses more on process than equipment
Domain 4: Professional Role: Behavior, Capabilities, and Leadership (15%)
Professionalism, communication, team dynamics, and the operations specialist's role within a simulation center's leadership structure.
- Often underestimated because it feels "soft," but it's worth more than Domain 1
Domain 5: Concepts in Instructional Design as Applied to Simulation (15%)
Learning objectives, curriculum alignment, and how operations work supports educational outcomes.
- Requires bridging technical operations knowledge with educational theory
For a full walkthrough of each domain with sample topics and study angles, read CHSOS Exam Domains 2026: Complete Guide to All 5 Content Areas.
| Domain | Weight | Approx. Scored Items (of 100) |
|---|---|---|
| 1. Concepts in Healthcare as Applied to Simulation | 10% | ~10 |
| 2. Simulation Technology Operations | 35% | ~35 |
| 3. Healthcare Simulation Practices, Principles, and Procedures | 25% | ~25 |
| 4. Professional Role: Behavior, Capabilities, and Leadership | 15% | ~15 |
| 5. Concepts in Instructional Design as Applied to Simulation | 15% | ~15 |
Who Sits for CHSOS and Why That Matters
Pass-rate speculation often ignores that CHSOS isn't open to anyone who registers. Candidates must already work in a healthcare-simulation operations role with focused learner-facing expertise, hold a bachelor's degree (or an equivalent combination of education and experience), document at least two years of hands-on simulation operations experience, and arrange three confidential references or reports. That's a meaningful filter before anyone even opens a study guide.
This matters because the population sitting for CHSOS is largely composed of practicing simulation technicians, operations specialists, and simulation center staff - not general test-takers exploring an unfamiliar field. Employers who hire for these roles, including academic medical centers, nursing schools, and hospital-based simulation programs, tend to look for exactly this credential when filling CHSOS jobs. If you're unsure whether you currently qualify, the full eligibility breakdown is in CHSOS Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Format Factors That Influence Outcomes
Beyond content, a few logistical details affect how candidates experience test day. The exam can be taken at a Prometric test center or through live remote proctoring via ProProctor, giving candidates flexibility in scheduling and location. Approved English-as-a-second-language accommodations may add one hour to the standard two-hour window, which is worth confirming well ahead of your registration if it applies to you.
Cost is another factor that shapes who commits to the exam and how seriously they prepare: $395 for SSH members and employees of supporting organizations, and $495 for nonmembers. Because a retake means paying again and re-scheduling through SMT/Prometric, most candidates treat the fee as motivation to prepare thoroughly the first time. A full cost breakdown, including what's and isn't included, is covered in CHSOS Certification Cost 2026: Complete Pricing Breakdown. If you're weighing the investment against the career payoff, Is the CHSOS Certification Worth It? Complete ROI Analysis 2026 and CHSOS Salary Guide 2026: Complete Earnings Analysis both dig into that question.
Key Takeaway
Whether you test at a physical Prometric center or remotely through ProProctor, the content and passing standard are identical - choose based on convenience and comfort, not perceived difficulty.
Where Candidates Typically Lose Points
Without an official item-analysis report, the most reliable way to anticipate weak spots is to reason from the blueprint itself. Domains with heavier weighting naturally carry more opportunities to either gain or lose points, and Domain 2 (Simulation Technology Operations) at 35% is the clearest example - a candidate who is strong operationally with manikins but hasn't reviewed the full range of AV, task trainer, and troubleshooting scenarios that SSH's practice analysis identified is leaving a large share of the exam under-prepared.
Domain 5, Concepts in Instructional Design as Applied to Simulation, is a common blind spot for candidates who come from a purely technical background. It asks operations specialists to connect their equipment and logistics work to learning objectives and curriculum design - a different cognitive lane than troubleshooting hardware. Similarly, Domain 4's professional-role content is easy to skim past in study sessions because it doesn't feel like "content," even though it's weighted higher than Domain 1.
The practical fix is to stop treating all domains equally in your review time and instead allocate study hours roughly proportional to blueprint weight, with extra buffer time for domains that mix disciplines (like Domain 5). The CHSOS Study Guide 2026: How to Pass on Your First Attempt walks through this allocation in more detail, and running timed sets on our CHSOS practice test platform is one of the fastest ways to see which domains actually need more attention versus which ones you're already solid on.
A Focused Prep Timeline Built Around the Blueprint
Generic study techniques - spaced repetition, timed drills, active recall - only help if they're pointed at the right material in the right order. Because Simulation Technology Operations carries more than a third of the exam, it deserves the most calendar time, followed by Healthcare Simulation Practices, Principles, and Procedures at 25%.
Domain 2 Foundations
- Review manikin operation, AV systems, and task trainer setup in depth
- Drill troubleshooting scenarios since this domain is 35% of scored items
Domain 3 Practices and Procedures
- Study scenario execution, prebriefing/debriefing support roles, and safety protocols
- Cross-reference with Domain 2 content since operations and procedures overlap
Domains 4 and 5
- Cover professional behavior, leadership, and communication topics
- Bridge instructional design concepts to your operations experience
Domain 1 and Full Review
- Close out foundational healthcare concepts
- Run full-length timed practice sets covering all five domains proportionally
If you want a condensed reference to keep nearby during this final stretch, the CHSOS Cheat Sheet 2026: One-Page Review of Must-Know Facts collects the highest-yield facts in one place. And before you lock in a test date, check CHSOS Exam Dates 2026: Testing Windows, Deadlines & Scheduling so your four-week plan lines up with an actual scheduling window.
Renewal and Long-Term Standing
Passing the exam isn't the end of the story. CHSOS certification is valid for three years, after which credential holders renew either by earning 45 Continuing Professional Development (CPD) credits - with required activity spread across every content domain - or by retaking the exam. This renewal structure reinforces the same message the blueprint sends at the initial exam stage: no domain, including the lighter-weighted ones like Domain 1 or Domain 4, can be permanently ignored.
For candidates who are still deciding whether to pursue the credential at all, understanding this long-term maintenance commitment is as important as understanding the initial pass/fail mechanics. It's worth reading alongside broader context pieces like CHSOS Certification and What Is CHSOS Certification? if you're still early in evaluating the credential, or CHSOS Training if you're mapping out how to build the required experience before you're even eligible to register.
Frequently Asked Questions
No. SSH publishes the passing standard (a scaled score of 700) and the exam blueprint, but not an aggregate pass/fail percentage. Any specific pass-rate number circulating online should be treated as unverified unless it's sourced directly from SSH.
Not necessarily. Scaled scoring adjusts for the difficulty of the specific set of items a candidate receives, so 700 is a standardized threshold rather than a literal percentage of the 100 scored questions.
Simulation Technology Operations, at 35% of the blueprint, carries the most scored items and the most risk if under-prepared. Healthcare Simulation Practices, Principles, and Procedures at 25% is the second priority.
No. There is no penalty for guessing, so candidates should answer every question rather than leaving any blank, even under time pressure.
You would need to re-register and pay the applicable fee ($395 for SSH members and supporting-organization employees, $495 for nonmembers) and reschedule through SMT/Prometric or ProProctor. Reviewing domain-specific weak areas before a retake, using resources like practice sets on our CHSOS practice exam site, is the most direct way to close gaps before trying again.