- What the Public Data Actually Shows
- Why One Pass Rate Cannot Describe a Two-Stage Credential
- What the Exam Asks of You: Format and Passing Standard
- The Factors That Decide Outcomes Without a Published Rate
- The Seven Subject Areas Where Candidates Win or Lose
- Eligibility as a Built-In Filter
- Retest Economics and Attempt Planning
- Sequencing Your Preparation Around the Seven Subjects
- Where the Credential Carries Weight
- Frequently Asked Questions
- The Professional Grounds Management Society does not publicly disclose a pass rate for the Certified Grounds Manager exam or the PGME portfolio.
- The initial exam has 75 questions, runs 90 minutes, and requires 80% to pass.
- The portfolio stage is graded separately against a rubric, so exam success alone does not equal certification.
- A retest costs $50, which makes a first-attempt failure far cheaper than the original fee.
What the Public Data Actually Shows
Candidates searching for a pass rate usually want one number: the percentage of people who pass on the first try. For the Certified Grounds Manager credential, that number does not exist in any public source. The Professional Grounds Management Society (PGMS) administers the program, and its handbook, certification page, and maintenance page describe the process, the fees, and the passing standard, but none of them publish pass or fail statistics for the exam or the portfolio.
That is a meaningful finding in itself. Any website quoting a precise percentage for this credential is either guessing, borrowing a figure from a different certification that shares the same acronym, or fabricating data. This article takes a different approach: it lays out what is verifiably known about how the credential is structured and scored, then explains which of those structural features most plausibly drive outcomes. If you want the broader difficulty picture alongside this one, see our companion piece, How Hard Is the CGM Exam? Complete Difficulty Guide 2026.
Why One Pass Rate Cannot Describe a Two-Stage Credential
The Certified Grounds Manager pathway is not a single sitting. It has two distinct stages, and each is evaluated differently:
- The online exam. A 75-question test taken online with an approved proctor. It is scored objectively against an 80% threshold.
- The PGME portfolio. A body of evidence, supported by mentorship, that is graded using a rubric. The rubric is organized into nine portfolio categories, which are separate from the exam subjects.
Because the two stages measure different things, a single blended "pass rate" would obscure more than it reveals. A candidate might clear the exam comfortably and still need to revise portfolio material, or the reverse. PGMS states that the PGME portfolio is graded on its own rubric and that no public pass rate is disclosed for it.
| Stage | How It Is Scored | Public Pass Rate |
|---|---|---|
| Initial online exam (75 questions, 90 minutes) | Objective scoring; 80% required | Not disclosed |
| PGME portfolio (nine portfolio categories) | Rubric-based grading | Not disclosed |
Candidates who want the full lifecycle, from eligibility through renewal, can find it in our overview of the certification and the requirements guide.
What the Exam Asks of You: Format and Passing Standard
Since the pass rate cannot be measured from outside, the best proxy for difficulty is the standard you must meet. Here is what PGMS publishes:
- Length: 75 questions in 90 minutes, which works out to roughly 72 seconds per question.
- Question types: multiple-choice and true/false.
- Passing standard: 80%. Our passing score breakdown covers how that threshold translates into the number of questions you can miss.
- Delivery: online, with an approved proctor.
- Scored versus unscored items: the split is unpublished, so you cannot know how many of the 75 questions count toward your result.
An 80% threshold is demanding for a certification exam. On a 75-question test, if every question were scored, you could miss no more than 15. Because PGMS does not publish how many items are unscored, treat any exact "allowed misses" arithmetic as an approximation rather than a guarantee.
The Factors That Decide Outcomes Without a Published Rate
With no statistics to lean on, it helps to reason from structure. Several features of this credential shape who succeeds, and they differ from most entry-level exams.
The Candidate Pool Is Pre-Screened
You cannot simply sign up and sit the exam. PGMS requires documented experience, including time at your current facility, a qualifying degree level, and years of grounds and supervisory work. That means everyone in the testing pool already works in the field. A pool of working professionals tends to behave differently from an open-enrollment pool, which is one reason borrowing pass-rate intuition from other credentials is unreliable.
The Preparation Material Is Broad but Not Weighted
The handbook lists seven illustrative subjects but publishes no weights and does not name a largest domain. Candidates cannot prioritize by percentage of the exam. Instead they must be competent across the whole range, which rewards breadth and penalizes candidates who specialize heavily in one area, such as turf, and neglect the rest.
Real-World Experience Helps Unevenly
A grounds manager with fifteen years of turf experience may be strong on turf grasses and management but rusty on irrigation hydraulics or tree and shrub diagnostics. The exam draws from across the discipline, so experience alone does not guarantee a pass. The sections below show where the gaps tend to hide.
The Seven Subject Areas Where Candidates Win or Lose
PGMS lists seven illustrative subjects for the application exam. These are unweighted preparation headings, not an exhaustive or scored blueprint, and they are distinct from the nine PGME portfolio categories. Our complete domains guide explores each one in more depth. Here is how they matter for outcomes.
Chemical and Fertilizers
Expect questions that test safe, effective, and legally sound use of products on managed landscapes.
- Understanding fertilizer formulations and application logic
- Handling, storage, and safety considerations for chemical products
- Matching product choice to a diagnosed problem rather than a symptom
Insects and Disease
This area rewards diagnostic reasoning more than memorization.
- Distinguishing pest damage from disease, nutrient, or environmental stress
- Recognizing when intervention is warranted versus monitoring
- Connecting cultural practices to pest and disease pressure
Irrigation
Often the weakest area for managers who inherited systems rather than designed them.
- System components and how they interact
- Scheduling concepts tied to soil and plant needs
- Troubleshooting uneven coverage and water waste
Management
The supervisory and operational side of running a grounds program.
- Planning, budgeting, and resource allocation
- Personnel, safety, and communication responsibilities
- Documenting decisions and outcomes
Soils
Soil knowledge underpins nearly every other subject, so gaps here cascade.
- Texture, structure, and drainage behavior
- Reading soil test information to guide fertility decisions
- Compaction, amendment, and long-term soil health
Trees and Shrubs
Woody plant care is a specialty many turf-focused managers underestimate.
- Selection, planting, and establishment practices
- Pruning principles and timing
- Recognizing common stress and decline patterns
Turf Grasses
The area most candidates feel confident about, which is exactly why overconfidence is a risk.
- Species and cultivar characteristics and regional adaptation
- Mowing, aeration, overseeding, and renovation practices
- Linking maintenance programs to turf performance
Key Takeaway
Because no subject is published as the largest, treat all seven as equally capable of sinking an 80% target. Audit your weakest area first, not your favorite one, then confirm coverage of the rest with a timed practice set on the main practice test site.
Eligibility as a Built-In Filter
One reason the credential's difficulty is hard to benchmark is that eligibility does much of the screening before anyone sees a question. PGMS requires at least one year at your current facility, plus one of three experience-and-education combinations:
| Education | Grounds Experience | Supervisory Experience |
|---|---|---|
| Relevant four-year degree | Four years | Two years |
| Two-year degree | Six years | Three years |
| No qualifying degree | Eight years | Four years |
Each path assumes years of hands-on practice. A candidate who reaches the exam stage has therefore already cleared a substantial experience bar. For a closer look at documentation and prerequisites, see CGM Requirements 2026: Eligibility, Prerequisites & How to Qualify.
This filtering effect cuts both ways. It likely lifts the average readiness of the pool, but it also means candidates are often experienced enough to be overconfident, and the exam's breadth can surprise them in areas outside their daily routine.
Retest Economics and Attempt Planning
Fees shape how much risk a first attempt carries. PGMS lists $200 for members, $300 for non-members, and $400 for a join-and-apply option. A retest costs $50. That gap matters: a failed first attempt costs a fraction of the original fee to repeat, so a miss is recoverable rather than catastrophic. The full financial picture, including renewal, is in our certification cost breakdown.
Timing is the tighter constraint. The initial testing window is 30 days, and the portfolio is due within one year. Plan backward from those deadlines instead of treating the exam as an open-ended event. Our exam dates and scheduling guide covers the mechanics.
Sequencing Your Preparation Around the Seven Subjects
Since the preparation material is unweighted, sequencing by dependency is more useful than sequencing by exam percentage. Soils underpins fertility and plant health, so it comes early. Here is one way to arrange a six-week run-up, tied to the subjects above. The detailed methodology lives in our CGM study guide.
Soils and Turf Grasses
- Rebuild soil fundamentals first, since they feed every later topic
- Review turf species, cultural practices, and renovation
Chemical and Fertilizers
- Tie product use back to soil and turf findings
- Focus on safety, handling, and appropriate selection
Insects and Disease
- Practice diagnosis from symptoms and conditions
- Connect pressure to cultural practices covered earlier
Irrigation and Trees and Shrubs
- Spend extra time here if these are not daily responsibilities
- Link water scheduling to soil and plant needs
Management
- Review planning, budgeting, personnel, and safety responsibilities
- Begin gathering portfolio evidence in parallel
Timed Practice Under Exam Conditions
- Run full 75-question sets against a 90-minute clock
- Revisit any subject scoring below your 80% target
The cheat-sheet approach can help in the final days. Our one-page review of must-know facts is built for last-pass reinforcement, and the practice tests on the main site let you rehearse the multiple-choice and true/false format.
Where the Credential Carries Weight
The pass rate matters less than what the credential unlocks. Certified Grounds Manager is a professional designation tied to grounds management leadership, so the people who value it are employers who run managed landscapes: campuses, municipalities, parks, athletic and recreational facilities, corporate and institutional properties, and the contractors who serve them. The credential signals supervisory competence across turf, soils, plant health, irrigation, and operations, not just a single trade skill.
For compensation context, see our salary guide, and for a return-on-investment view that weighs fees against career impact, read Is the CGM Certification Worth It?. Employment angles are collected in our jobs overview.
Holding the credential also carries an ongoing obligation. Certification renews every three years with 25 continuing education units, at least 80% of which must be PGMS-approved. The renewal fee is $75, reduced by $25 per year of membership. That ongoing cost and effort is part of the true commitment, and it is one more reason the headline exam difficulty is only part of the story.
Frequently Asked Questions
PGMS does not publish a pass rate for the exam or the PGME portfolio. The reviewed public sources state the 80% passing standard but no candidate pass statistics. Any specific percentage you see elsewhere should be treated as unverified.
You need 80%. The exam has 75 questions delivered in 90 minutes. PGMS does not publish how many of those items are scored versus unscored, so the exact number of allowable misses cannot be stated with certainty. See the passing score guide for more.
No. After the online exam, candidates complete the PGME portfolio, which is graded separately against a rubric with nine portfolio categories. The portfolio is due within one year, and mentorship and evidence submission are required.
A retest costs $50. The initial exam fee is $200 for PGMS members, $300 for non-members, and $400 for the join-and-apply option. The cost breakdown shows how these fit into the full budget.
PGMS does not publish weights or identify a largest subject. The seven illustrative subjects, from Chemical and Fertilizers through Turf Grasses, are unweighted preparation headings, so you should prepare evenly across all of them rather than gambling on one.