- The Number You Need: 80%
- What an 80% Cut Means on 75 Questions
- Two Gates: Exam Score vs. PGME Portfolio
- What PGMS Does Not Publish
- Where Points Come From: The Seven Preparation Subjects
- Format, Timing and Proctoring Details
- Fees, Registration and Retests
- Eligibility Before You Ever See a Score
- A Score-Targeted Study Sequence
- After the Exam: Portfolio and Renewal
- Frequently Asked Questions
- The Certified Grounds Manager exam requires 80% to pass, administered by the Professional Grounds Management Society (PGMS).
- The initial exam has 75 questions in 90 minutes, mixing multiple-choice and true/false items.
- PGMS has not published a scored-versus-unscored question split, so you cannot calculate an exact missed-question limit.
- The separate PGME portfolio is graded with a rubric, not a percentage cut score on the exam.
The Number You Need: 80%
If you are searching for the CGM passing score, the answer from the Professional Grounds Management Society is direct: 80% is required on the initial Certified Grounds Manager exam. That threshold applies to the online, proctored examination that forms the first stage of the credential.
That is a demanding bar compared with many professional certification exams, and it shapes how you should prepare. An 80% cut means you cannot afford to skip an entire subject area and hope to make it up elsewhere. Grounds management is a broad field, and the exam rewards candidates who are competent across turf, trees, soils, irrigation, chemicals, pests, and management practice rather than strong in just one corner.
This article breaks down what the 80% figure means in practice, what PGMS does and does not disclose, how the exam score relates to the portfolio stage, and how to build a study sequence aimed squarely at clearing the threshold. For a broader look at the whole credential, see our overview of what CGM certification is.
What an 80% Cut Means on 75 Questions
The initial exam contains 75 questions. At face value, 80% of 75 is 60 correct answers. That is the intuitive calculation most candidates make, and it is a reasonable planning target. However, there is an important caveat you should understand before treating it as a precise rule.
The scored/unscored question issue
PGMS has not published how the exam divides between scored and unscored items. Some certification programs include unscored pretest questions that do not count toward your result. If this exam does, the denominator for your 80% might be lower than 75. If it does not, the denominator is 75. Because the split is unpublished, you cannot know the exact number of questions you may miss.
The practical takeaway is simple: do not plan around a specific number of "allowed misses." Instead, plan to be comfortably above 80% in your practice scores so that the unknown does not matter. A candidate who consistently scores in the high 80s on realistic practice material has a margin that absorbs uncertainty about scoring mechanics.
| Item | What PGMS States | What Is Not Published |
|---|---|---|
| Passing standard | 80% required | Whether scoring is raw percent or scaled |
| Question count | 75 questions | Scored versus unscored split |
| Time limit | 90 minutes | Whether unanswered items are penalized differently from wrong ones |
| Question types | Multiple-choice and true/false | Exact proportion of each type |
| Domain weighting | Seven illustrative subjects listed | Any weighted blueprint or largest-domain figure |
Two Gates: Exam Score vs. PGME Portfolio
Many candidates conflate the exam with the full certification process. Earning the Certified Grounds Manager credential involves two distinct evaluations, and they are graded in completely different ways.
Gate one: the application exam
This is the 75-question, 90-minute online test taken with an approved proctor. It carries the 80% requirement discussed above. It is a knowledge test, and your result is a percentage.
Gate two: the PGME portfolio
After the exam comes the PGME portfolio. This is a separate submission that is graded using a rubric. It is not scored as a percentage on a multiple-choice test, and PGMS does not publicly disclose a pass rate for it. The portfolio requires mentorship and evidence submission, and it is due within one year of the initial testing step.
For a deeper look at how the exam stage compares in difficulty, read How Hard Is the CGM Exam? and the separate discussion of what the pass-rate data shows. Note that PGMS does not publish a pass rate for the portfolio, so any figure claiming to describe it should be treated with skepticism.
What PGMS Does Not Publish
A trustworthy passing-score guide should be candid about gaps. Based on the publicly reviewed PGMS materials, several details that candidates often ask about are simply not available.
- No dated current blueprint. The official certification handbook carries 2022 annotations, but there is no clearly dated, current exam blueprint with weighted domains.
- No published domain weights. PGMS does not state which subject carries the most questions, so any claim that one domain is "the biggest" is not supported by public sources.
- Unknown number of complete weighted domains. The seven subjects listed in the handbook are illustrative preparation headings, not a complete weighted examination blueprint.
- No disclosed exam pass rate. There is no official percentage of candidates who pass the exam on a first attempt.
- Unverified testing rules. The supplied references do not establish whether the exam is open-book, whether a calculator is allowed, whether it is adaptive, or what home-testing rules apply beyond the approved-proctor requirement.
Because of these gaps, the safest strategy is to confirm current rules directly with PGMS before your testing window opens. Treat anything not confirmed in writing as unknown rather than assuming a convenient answer.
Where Points Come From: The Seven Preparation Subjects
The PGMS handbook lists seven illustrative subjects for the application exam. These are unweighted preparation headings. They tell you what to study, not how many questions each will contribute. Because every point counts against an 80% bar, you should be conversant in all seven. Our full breakdown is in the CGM exam domains guide.
Chemical and Fertilizers
Expect questions on the safe, effective, and legal use of materials applied to landscapes.
- Reading and interpreting product labels and application rates
- Fertilizer nutrient components, ratios, and timing
- Safe handling, storage, and calibration of application equipment
- Matching a material to the problem rather than defaulting to a favorite product
Insects and Disease
This subject tests diagnosis and response, which is where many practitioners rely on experience rather than textbook terms.
- Distinguishing insect damage, disease symptoms, and cultural or environmental stress
- Integrated pest management thinking: monitor, identify, threshold, then treat
- Life cycles and timing of control measures
- Common turf and ornamental pest and pathogen problems
Irrigation
Water management questions reward both system knowledge and agronomic reasoning.
- Components of irrigation systems and how they fail
- Scheduling concepts tied to soil, plant, and weather conditions
- Efficiency, coverage, and troubleshooting uneven application
- Conservation practices and common design considerations
Management
The Management subject reflects the credential's identity: this is a manager's certification, not only a technician's.
- Budgeting, planning, scheduling, and resource allocation
- Supervising crews, communication, and safety programs
- Contract and client relationships and documentation habits
- Setting maintenance standards and measuring results
Soils
Soils underpin almost every other subject, so weakness here tends to cost points elsewhere.
- Texture, structure, compaction, and drainage
- pH, nutrient availability, and amendments
- Interpreting a soil test and acting on it
- Organic matter and its role in plant health
Trees and Shrubs
Woody plant care covers selection, establishment, pruning, and problem recognition.
- Proper planting, mulching, and early-life care
- Pruning principles and timing
- Site and species matching
- Recognizing decline, structural problems, and stress indicators
Turf Grasses
Turf is a core competency for most grounds professionals and is likely to feel familiar, but precision matters.
- Cool-season versus warm-season species and adaptation
- Mowing height, frequency, and cultural practices
- Establishment, renovation, and overseeding
- Common turf problems and cultural fixes
Because the subjects are intertwined, many exam items may blur the lines. A question about a yellowing shrub could draw on soils (pH), irrigation (overwatering), insects and disease, and chemicals all at once. Studying relationships between subjects pays off at an 80% standard. The CGM study guide expands on how to connect these areas.
Format, Timing and Proctoring Details
The exam is delivered online through PGMS with an approved proctor. You will answer 75 questions in 90 minutes, which works out to roughly 72 seconds per question on average. That pace is workable for recall questions but tighter for scenario items that require reading carefully.
Question types are multiple-choice and true/false. True/false items can feel deceptively easy, yet they often hinge on a single absolute word such as "always" or "never." In a field full of exceptions, absolutes deserve suspicion.
Key Takeaway
Plan for about 90 minutes of continuous, focused testing with an approved proctor. Because calculator rules, open-book status, and home-testing specifics are not established in the supplied references, confirm those details with PGMS when you schedule, and do not assume reference materials will be permitted.
Fees, Registration and Retests
Your passing score is tied to your wallet in one practical way: a failed attempt means paying again. Here are the fee mechanics from PGMS.
| Fee Item | Amount |
|---|---|
| Exam fee, PGMS member | $200 |
| Exam fee, non-member | $300 |
| Join PGMS and apply together | $400 |
| Retest | $50 |
The $50 retest fee is modest relative to the initial fee, which softens the financial penalty of a miss. Even so, the real cost of a retake is time, scheduling friction, and the delay to your credential. The initial testing window is 30 days, so build your preparation to finish well before that window opens or closes. For a complete financial picture, including renewal, see the CGM certification cost breakdown, and for timing details see CGM exam dates and testing windows.
Eligibility Before You Ever See a Score
You cannot reach the 80% question until you qualify to test. PGMS requires at least one year at your current facility, combined with a pathway based on education and experience:
- A relevant four-year degree plus four years of grounds experience, two of them supervisory
- A two-year degree plus six years of experience, three of them supervisory
- No qualifying degree plus eight years of experience, four of them supervisory
These requirements mean most candidates sit the exam with substantial field experience. That helps on practical questions but can create overconfidence. Experience tells you what works at your site; the exam asks what is correct in general. The full eligibility picture is covered in CGM requirements.
A Score-Targeted Study Sequence
Rather than generic advice, here is a sequence built around the seven subjects and the 80% bar. The logic: start with foundations that feed other subjects, then move to applied topics, then close gaps with mixed practice.
Soils and Turf Grasses
- Soils first, since pH, texture, and drainage explain problems in every other area
- Turf grasses alongside it, using soil concepts to explain species and cultural practices
Irrigation and Trees and Shrubs
- Irrigation scheduling tied back to the soil properties from Week 1
- Woody plant establishment, pruning, and site matching
Insects and Disease, Chemicals and Fertilizers
- Diagnosis before treatment: separate pests, pathogens, and cultural stress
- Label reading, nutrient ratios, and safe application
Management and Mixed Review
- Budgeting, supervision, and safety practices
- Timed mixed sets across all seven subjects to practice 72-second pacing
Use practice questions throughout rather than saving them for the end. Our practice test site offers question sets so you can measure yourself against the 80% target before test day. If you want a compact refresher near the end, the CGM cheat sheet condenses the must-know facts.
After the Exam: Portfolio and Renewal
Clearing 80% is the first milestone, not the finish line. The PGME portfolio follows, with mentorship and evidence submission, due within one year. That stage is graded by rubric, and PGMS does not publicly disclose its pass rate.
Once certified, you maintain the credential by renewing every three years. Renewal requires 25 CEUs, with at least 80% of them PGMS-approved, and a renewal fee of $75 less $25 per member year. Continuing education is an ongoing professional habit, not a one-time obligation.
If you are weighing whether the effort is justified, our analysis of whether the CGM certification is worth it and the CGM salary guide explore the career side, and you can browse CGM jobs to see where the credential is valued.
Frequently Asked Questions
The initial CGM exam administered by the Professional Grounds Management Society requires 80% to pass. The exam has 75 questions and a 90-minute time limit.
If all 75 questions are scored, 80% equals 60 correct answers. However, PGMS has not published whether some questions are unscored, so the exact number of allowable misses cannot be confirmed. Aim to score comfortably above 80% in practice.
No. The PGME portfolio is graded separately using a rubric, and PGMS does not publicly disclose a pass rate for it. The 80% requirement applies to the application exam only.
You can retest. The retest fee is $50, compared with an initial exam fee of $200 for members or $300 for non-members. Check with PGMS for current scheduling rules around the testing window.
PGMS does not publish domain weights. The seven subjects in the handbook are illustrative preparation headings, not a complete weighted blueprint, so prepare for all of them rather than gambling on a perceived largest area.
The 80% passing score is clear, but the details around it are not fully published, which is exactly why a broad, margin-building preparation approach works best. For the complete picture, revisit the CGM passing score guide alongside the rest of our resources, and use the CGM practice tests to find out where you stand.