CMR Practice Test

The Certified Mold Remediator (CMR) exam is for candidates seeking the mold remediator credential from the National Organization of Remediators and Microbial Inspectors (NORMI). This page brings together free practice sets, worked answers, and verified exam details to help you plan your preparation. Our practice content is written with AI tools; the sample questions are our own, not real exam questions or an official exam outline.

CMR Exam at a Glance

What changed for CMR in 2026

• Oct 27, 2026: Number of questions changed to 100 questions (previously Two-part exam: written test plus proctored interview).^[1]
• Oct 27, 2026: Passing score changed to 70% (previously 70% or higher).^[2]
• Oct 27, 2026: Delivery changed to Online proctored or onsite (previously Proctored exam, booked on its own or with the CMR class (online and onsite course options)).^[1]
• Oct 27, 2026: Eligibility changed to Training recommended but not required for exam (previously Training recommended, not required for the exam; certification requires at least 24 hours of mold remediation education).^[2]

What the CMR is and how it works

According to National Organization of Remediators and Microbial Inspectors, “This 100 question, 2 hour examination is given at the locations and on the dates listed below in a proctored setting.”^[1]

The CMR examination is for candidates pursuing NORMI's Certified Mold Remediator credential. It contains 100 questions, allows 2 hours, and has a 70% passing score. Delivery is online with proctoring or onsite. Best Training School's exam-only page describes the delivery options; check the registration information for your selected sitting.

Training is recommended but not required to take the examination. NORMI states this on its examinations for mold assessor and mold remediator page. That exam-entry rule should not be read as a statement about every requirement for obtaining or maintaining the credential.

The listed exam fee is $389 when challenging the exam without taking a class, or $299 after completing a CMR course. The listed retake fee is $149. Best Training School states that failing the exam twice requires taking the course again at your own expense.

Best Training School's registration information lists proctored examinations every Tuesday at 1:00 PM Eastern and grade documentation by email within 10 business days. Confirm scheduling through that official registration source before making arrangements. No official content-area outline has been verified for this page, so the practice-set titles below are study categories, not an official blueprint.

Worked examples: how to reason through CMR questions

These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.

Example 1

Question: A vapor barrier installed on the wrong side of a wall assembly in a cold climate can:

1. Improve energy efficiency
2. Trap moisture within the wall cavity and promote mold
3. Reduce indoor humidity naturally
4. Prevent condensation on window frames

Answer: B. Trap moisture within the wall cavity and promote mold

Explanation:

B is correct: a poorly placed vapor barrier can restrict drying and allow moisture to accumulate within a wall, creating conditions that support mold. The question asks what can happen, rather than describing an inevitable outcome for every wall assembly. A is wrong because incorrect vapor-barrier placement does not establish improved energy efficiency. C is wrong because trapping moisture in a wall does not naturally reduce indoor humidity. D is wrong because a wall vapor barrier does not by itself prevent condensation on window frames. Remember the moisture-control principle: consider climate, the wall's materials, and its drying paths together. Vapor control and air-leakage control are related but distinct concerns.

Example 2

Question: What should be done when strategic implementation encounters unexpected obstacles?

1. Assess the situation, adjust the plan as needed, and communicate changes to stakeholders
2. Abandon the strategy entirely and start over
3. Continue without changes regardless of obstacles
4. Blame the planning team and reassign responsibilities

Answer: A. Assess the situation, adjust the plan as needed, and communicate changes to stakeholders

Explanation:

A is correct: assessing the obstacle helps determine what has changed, adjusting the plan addresses that change, and communicating keeps affected stakeholders informed. B is wrong because an unexpected obstacle does not automatically make the entire strategy unusable; abandoning it before assessment skips the decision that matters. C is wrong because continuing unchanged ignores information that may affect whether the work can proceed as planned. D is wrong because blame and reassignment do not establish the cause of the obstacle or an appropriate response. Remember the general rule: investigate the problem, make a justified adjustment, and explain the change to the people it affects.

Example 3

Question: Which of the following actions violates mold remediation safety standards?

1. Using a HEPA vacuum for cleanup.
2. Dry sweeping mold-contaminated debris.
3. Disposing of moldy materials in sealed bags.
4. Wetting moldy materials before removal.

Answer: B. Dry sweeping mold-contaminated debris.

Explanation:

B is correct: dry sweeping can lift mold-contaminated dust and debris into the air, increasing exposure and spreading contamination. A is wrong because HEPA vacuuming is a cleanup method intended to capture fine particles rather than scatter them. C is wrong because sealing moldy waste in bags helps contain debris during handling and disposal. D is wrong because controlled wetting can limit dust release during removal; it should not be interpreted as soaking materials or adding uncontrolled moisture. Remember the general rule: choose methods that contain contamination and limit airborne dust. The other options describe useful controls, but none alone establishes that an entire remediation job is safe.

How to use these practice tests

Begin with NORMI's examination information and the Best Training School registration details. Check the delivery arrangement, fee category, and scheduling information that apply to your booking. Keep official material beside your practice notes so you can distinguish exam requirements from our study categories.

Start your practice with Moisture Control & Building Science and Mold Inspection & Assessment. For each missed answer, write down the condition you overlooked and why your chosen option fails.

Move to Mold Remediation Techniques & Procedures and Safety & Health Standards. Explain your choice before reading the answer. Revisit any explanation you cannot connect to the question's details.

Use Regulatory Compliance & Documentation to identify topics to check against official material. Treat broader management and communication sets as supplementary practice, since no official blueprint is verified here. Before test day, revisit your error notes and practise pacing with the verified 100-question, 2-hour format in mind.

Sources & last verified

1. besttrainingschool.com — number of questions, time limit, delivery (official source). “This 100 question, 2 hour examination is given at the locations and on the dates listed below in a proctored setting.” Verified Oct 27, 2026 · source checked Oct 23, 2026.
2. National Organization of Remediators and Microbial Inspectors — passing score, eligibility (official source). “Though training is not required for the taking of these examinations, it is highly recommended, and a large percentage of those who take the examination…” Verified Oct 27, 2026 · source checked Oct 19, 2026.
3. besttrainingschool.com — exam fee, retake fee (official source). “NO Class Taken | Challenging the Exam | CMR-MRSR | $389.00 | More Info” Verified Oct 27, 2026.
4. besttrainingschool.com — retake policy (official source). “PLEASE NOTE that if you fail this exam a second time, you will be required to take the course again at your own expense.” Verified Oct 27, 2026.
5. National Organization of Remediators and Microbial Inspectors — renewal (official source). “Yes, NORMI™ requires 7 hours of continuing education each year (By August 31st) and offers 48 opportunities a year to gain one (1) hours of…” Verified Oct 27, 2026.
6. besttrainingschool.com — score release, testing window (official source). “8) Documentation of the grade will be provided via email within 10 business days” Verified Oct 27, 2026.

How we verify: editorial & fact-checking policy. Report an error: contact us.