- The Number: 80% on a 50-Question Exam
- What 80% Means in Practice
- What PGMS Does Not Publish
- Seven Categories, One Combined Score
- What Has to Happen Before You Can Even Test
- Fees, Retests, and the Cost of Missing 80%
- Sequencing Your Prep Around the 80% Line
- After You Pass: Keeping the Credential
- Frequently Asked Questions
- The Certified Grounds Technician passing threshold is 80%, set by the Professional Grounds Management Society (PGMS).
- The exam has 50 questions and a 90-minute time limit, delivered online with an approved proctor.
- PGMS publishes seven content categories but no percentage weights, so prepare evenly across all seven.
- A retest costs $50, versus $150 member or $250 non-member for the initial application.
The Number: 80% on a 50-Question Exam
The passing threshold for the Certified Grounds Technician (CGT) exam is 80%. The credential is administered by the Professional Grounds Management Society (PGMS), and the exam consists of 50 questions to be completed in 90 minutes. That is the whole scoring headline, and it is simpler than many professional certifications, which often use scaled scores that hide how many items you actually need to answer correctly.
If you are comparing this exam to others you have researched, keep one point straight: this article covers the PGMS Certified Grounds Technician credential only. Other certifications share the "CGT" acronym, and their scoring rules do not apply here. If you are still orienting yourself, our explainer What Is CGT Certification? lays out which credential we mean and who it is built for.
What 80% Means in Practice
On a 50-question exam, 80% works out to 40 correct answers if every question counts equally. That arithmetic is the most useful way to think about the threshold: you can miss up to ten questions and still reach 80%.
There is an important caveat, though. PGMS does not publish whether the exam includes unscored items, which some certification programs use to pilot future questions. The scored/unscored split is not published, so you cannot assume that all 50 questions count toward your result. Treat every question as if it counts, because you will not be able to tell which ones, if any, do not.
| Scoring Element | What Is Known |
|---|---|
| Passing threshold | 80% |
| Number of questions | 50 |
| Time limit | 90 minutes |
| Time per question (average) | Roughly 1.8 minutes |
| Scored vs. unscored split | Not published |
| Published pass rate | Not publicly disclosed |
| Category percentage weights | Not published |
The pacing math is generous compared with many exams. At about 1.8 minutes per question, you have time to read carefully and flag anything uncertain. For a deeper look at how demanding the content is relative to the clock, see How Hard Is the CGT Exam? Complete Difficulty Guide 2026.
Why 80% Is a Meaningful Bar
An 80% threshold is higher than the 70% or so that many credentialing exams use. It signals that PGMS expects working competence, not a borderline grasp of the material. For a grounds technician, that tracks with the job: mixing up a fertilizer rate, misidentifying a pest problem, or skipping a safety step has real consequences on a property. The scoring standard mirrors the standard of the work.
What PGMS Does Not Publish
A lot of search results about exam scores quietly invent details. Here is what is genuinely not available from PGMS, so you can avoid planning around fiction:
- Pass rate: PGMS does not publicly disclose how many candidates pass. If you see a specific pass-rate percentage quoted elsewhere, treat it skeptically. Our page on the CGT pass rate walks through what can and cannot be said responsibly.
- Category weights: The seven content categories are official, but the percentage weight of each is unpublished. No category has been verified as the highest-weighted.
- Item-format mix: The exact mix of question formats is not explicitly verified in the sources we rely on, so we will not tell you how many are multiple choice versus another style.
- Exam-day rules: Whether a calculator is allowed, whether the exam is open-book, whether it is adaptive, and how flexible home proctoring is are all unverified. Confirm these directly with PGMS and your proctor before test day.
- Current revision date: There is no dated 2026 revision. The official handbook contains 2022 annotations, so read it as the current governing document rather than assuming a newer edition exists.
Seven Categories, One Combined Score
The exam draws from seven official content categories. Because weights are unpublished and the 80% threshold applies to your overall result, you cannot afford to write off any one area on the theory that it is lightly tested. A weak category you ignore could cost you several of the ten misses you can afford.
Domain 1: Basic Plant Care
The foundation of everything else on the exam. Expect to be comfortable with how plants grow and what they need to stay healthy.
- Core plant needs: water, light, nutrients, and soil conditions
- Proper planting and basic maintenance practices
Domain 2: Shade Trees
Tree care is a distinct skill set from turf and ornamentals, and it rewards precise knowledge.
- Pruning principles and timing
- Recognizing common tree health problems
Domain 3: Turf Management
Turf is central to most grounds operations and a familiar area for many working technicians.
- Mowing, fertilizing, and aeration practices
- Diagnosing turf stress and decline
Domain 4: Shrub and Flower Care
Ornamental plantings require knowledge of seasonal care and maintenance routines.
- Pruning and maintaining shrubs
- Care of annual and perennial flowers
Domain 5: Pest and Disease Control
Accurate identification comes before treatment, and the exam rewards that order of operations.
- Distinguishing pests, diseases, and cultural or environmental problems
- Appropriate and responsible control approaches
Domain 6: Irrigation
Water management ties directly into plant health across the other domains.
- How irrigation systems function and are maintained
- Watering practices that match plant and site needs
Domain 7: Safety
Safety questions often feel like common sense, but the exam expects you to know the correct practice, not just a reasonable guess.
- Safe equipment operation and personal protective practices
- Safe handling of chemicals and hazardous situations
For a full walkthrough of every area and how they connect, read CGT Exam Domains 2026: Complete Guide to All 7 Content Areas.
What Has to Happen Before You Can Even Test
The passing score is only one gate. You cannot reach the exam without clearing several earlier ones, and the timeline rules affect how you should plan.
Eligibility and Documentation
Candidates need a high-school diploma or GED and two years of grounds-maintenance experience. You also submit education and employment documentation, plus any applicable sponsor documentation. The process includes mentor review meetings, which are described in the program materials but are not a fixed training-hour prerequisite. Our CGT Requirements guide covers qualification in more detail.
The Mentor and the Clock
The exam is an online, PGMS-administered test taken with an approved proctor, and you are assigned a mentor as part of the process. Two timing rules matter:
- You must test within 30 days of mentor assignment.
- You must complete certification within one year.
The 30-day window is the one that catches people off guard. It means you should have your study foundation largely in place before your mentor is assigned, not start from zero afterward. For scheduling details, see CGT Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Key Takeaway
Because the 30-day testing window begins at mentor assignment, finish the bulk of your content review first. Use the mentor period for targeted weak-spot work and logistics, not for learning the seven domains from scratch.
Fees, Retests, and the Cost of Missing 80%
The financial structure makes the stakes of the passing score clear. Missing 80% is not catastrophic, but it is not free either.
| Fee Type | Amount |
|---|---|
| Application (PGMS member) | $150 |
| Application (non-member) | $250 |
| Join PGMS and apply together | $350 |
| Retest | $50 |
The retest fee of $50 is modest compared with the initial application fee, so a near-miss does not force you to repay the full price. Still, a retest costs you time, and the one-year completion window keeps running. The better strategy is to prepare thoroughly enough that you pass the first time. For the complete financial picture, including renewal, see CGT Certification Cost 2026: Complete Pricing Breakdown.
A Note on Join-and-Apply Math
The join-and-apply fee of $350 equals the $250 non-member application fee plus $100, which effectively covers membership. If you are not yet a PGMS member and plan to stay in the field, the combined option bundles membership with your application. Weigh it against your own situation, and read our ROI analysis of the CGT credential if you are deciding whether the investment fits your career plans.
Sequencing Your Prep Around the 80% Line
Because you can miss at most ten questions and because category weights are unknown, your prep should aim for broad competence across all seven domains rather than mastery of a few. Here is one way to sequence a six-week plan, with the reasoning tied to this specific exam.
Basic Plant Care, then Turf Management
- Basic Plant Care first, since plant needs underpin every other domain.
- Turf Management next, as it is a high-frequency area in day-to-day grounds work.
Shade Trees, Shrub and Flower Care, Irrigation
- Group the plant-specific domains together to compare pruning and care across plant types.
- Pair Irrigation here so water management connects to what each plant group needs.
Pest and Disease Control, then Safety
- Practice distinguishing pests, diseases, and environmental problems.
- Review Safety last but thoroughly; it is easy to underestimate.
Full-Length Timed Practice
- Take 50-question timed sets within a 90-minute window.
- Score yourself against the 80% line and return to your weakest domain.
When you take practice sets, aim to score comfortably above 80% rather than right at it, since real exam conditions add pressure. You can build that habit with the CGT practice tests on our main site, and a structured plan is laid out in CGT Study Guide 2026: How to Pass on Your First Attempt. For a fast last-minute refresher, the CGT cheat sheet condenses the must-know facts.
After You Pass: Keeping the Credential
Clearing 80% earns a credential that is valid for five years. Renewal requires 35 continuing education units (CEUs), with at least 80% of them PGMS-approved. The renewal fee is $100, reduced by $20 for each year you have been a PGMS member. The renewal threshold echoes the exam's 80% figure in a different context, though the two are separate requirements.
If you are thinking about where the credential can take you, our guides on earnings and CGT jobs discuss the employers and roles that value it, and CGT training covers ways to build the underlying skills.
Frequently Asked Questions
The passing threshold is 80%. On a 50-question exam, that corresponds to 40 correct answers if all questions are scored equally, though PGMS does not publish whether any items are unscored.
The exam has 50 questions and a 90-minute time limit. It is administered online by PGMS with an approved proctor.
You can retest for a $50 fee. Keep in mind the timeline rules, including the requirement to complete certification within one year, and confirm current retest procedures with PGMS.
PGMS does not publish percentage weights for the seven categories, and no highest-weighted category has been verified. The safest approach is to prepare for all seven: Basic Plant Care, Shade Trees, Turf Management, Shrub and Flower Care, Pest and Disease Control, Irrigation, and Safety.
Calculator, open-book, and home-proctoring rules are not verified in the sources we rely on. Ask PGMS or your assigned mentor directly before test day so you are not surprised.