CD Requirements 2026: Eligibility, Prerequisites & How to Qualify

What the Course Director Credential Actually Qualifies You To Do

The Course Director (CD) designation, issued by the Council for Accreditation in Occupational Hearing Conservation (CAOHC), is an instructor qualification. It is not an entry-level hearing conservation credential. CAOHC-approved Course Directors are the professionals who direct occupational hearing conservation (OHC) certification and recertification courses, which is why the requirements are built around demonstrated experience rather than a single test score.

That framing explains almost everything about the eligibility rules. CAOHC is not asking whether you can recall facts about noise exposure. It is asking whether you have already worked in the field long enough, held a qualifying professional credential, and taught alongside an experienced director in a real course. If you are new to the acronym or still sorting out how this credential differs from others that share it, start with What Is CD Certification? and What Does CD Stand For? before diving into the details below.

The Four Eligibility Pillars

Eligibility for the Course Director credential rests on four requirements that all have to be satisfied, and documented, before you can register in the ordinary way.

Notice that three of the four pillars are about proof rather than performance. A candidate with years of excellent hearing conservation work can still be stalled by missing paperwork, so treat documentation as a project of its own rather than an afterthought.

The qualifying credential question

The first pillar is a current, qualifying professional license or certification. One point deserves caution: the current eligibility information on the CAOHC website includes physician assistants, while the November 2025 policy manual's list of qualifying professions differs. Because the two sources do not perfectly agree, do not assume your profession qualifies based on one page alone. Confirm your specific credential with CAOHC and obtain approval in writing before investing time in the rest of the process. The policy manual was last revised in November 2025, so check that you are reading the current edition.

Documenting the 1,000 Relevant Hours

The experience requirement is the most labor-intensive part of qualifying. You need 1,000 relevant hours accumulated within the past five years, and those hours cannot all come from a single kind of work. They must span at least three of the specified activity categories that CAOHC recognizes for hearing conservation practice. Consult the current CAOHC materials for the exact list of qualifying activities, since the specific categories are defined by the issuer rather than left to interpretation.

Building a defensible record

• Start a running log now, with dates, hours, employer or client, and the activity category for each entry.
• Keep the five-year window in mind: older hours roll off as time passes, so a record that barely clears 1,000 today may not in a year.
• Ask supervisors to confirm your hours while they still remember your role, rather than reconstructing details later.
• Match each entry to the category language CAOHC uses so reviewers do not have to interpret your descriptions.

The Supervised Course Requirement

Before you are eligible, you must complete a full supervised in-person or hybrid OHC course while serving as adjunct faculty or as a practicum assistant. This is where the credential becomes very different from a standard exam-based certification. You are expected to have actually participated in delivering a course under the oversight of an experienced director, not just to have observed one or read about how courses run.

Two practical consequences follow. First, you need access to a course and a director willing to supervise you, which can take lead time to arrange. Second, the supervising director or supervisor becomes part of your documentation, because verification letters are part of what CAOHC reviews. Choose a supervising relationship with the application in mind, and ask early whether the person is prepared to provide the required letter once the course ends.

Approval Comes Before Registration

The order of operations catches many applicants off guard. Ordinary registration for the workshop and exam does not open until your credential documentation and your supervisor or CD verification letters have been submitted and approved. You cannot simply pay and sign up, then sort out the paperwork afterward.

1. Confirm your professional credential qualifies and is current.
2. Compile your 1,000-hour record across at least three activities.
3. Complete the supervised OHC course as adjunct faculty or practicum assistant.
4. Collect the supervisor or CD verification letters.
5. Submit documentation and receive approval.
6. Register for the workshop and exam.

If you are comparing timelines, the dates and windows for the workshop and exam are covered in CD Exam Dates 2026: Testing Windows, Deadlines & Scheduling. Build your approval deadline backward from the date you want to attend.

Workshop, Exam Format and Fees

Once approved, you complete the Course Director workshop and the exam. The workshop is an eight-hour session, and that eight hours is training time, not an exam duration. The virtual workshop scheduled for October 16, 2026 is priced separately from the exam.

The combined totals are simple arithmetic from the published component fees. CAOHC does not publish a member versus non-member price distinction for these items. For the full picture of what the credential costs over time, see CD Certification Cost 2026: Complete Pricing Breakdown.

How the exam is delivered

The exam is online, delivered through the CAOHC Learning Center, and it is open-book. Your progress is saved, and you have a ten-day window to finish it. This is not a continuous multi-hour sitting. The passing score is 80%, and you get two attempts within that window. If you fail both, you must repeat the workshop and the exam. The question count, scored versus unscored split, and exact item types are not publicly verified, so avoid relying on secondhand claims about them. Whether any CD-specific remote-proctoring rules apply is likewise not publicly confirmed. Details on scoring appear in CD Passing Score 2026: Exactly What You Need to Pass.

What You Will Be Prepared On

CAOHC publishes five Course Director workshop curriculum areas. These are preparation topics from the issuer's course description, not a weighted or exhaustive exam blueprint, and CAOHC does not publish official domain weights, so treat any percentage you see attached to them elsewhere with skepticism. Knowing the topics still helps you judge whether your background is a good fit before you commit to the process.

It is important not to confuse these workshop topics with the separate OHC student examination blueprint. The students you will eventually teach sit a different exam with different content. For a deeper walk through each area, see CD Exam Domains 2026: Complete Guide to All 5 Content Areas, and visit the main practice test site to test yourself against these topics.

Sequencing Your Qualification Path

Because several requirements run on different clocks, sequencing matters more than raw effort. The one place where general study planning is worth doing is the weeks between approval and the exam window, and it should be tied to the five topics above rather than generic advice.

Regulatory material goes first because it is the most likely to have changed since you last reviewed it. A fuller preparation approach is in CD Study Guide 2026: How to Pass on Your First Attempt.

Keeping the Credential: Five-Year Validity and Renewal

The Course Director credential is valid for five years. Renewal is possible by completing the workshop plus the renewal exam, or through an eligible exam-only route. The exam-only route requires at least two of the following:

• Ten qualifying OHC courses directed
• Two years of CAOHC committee or task-force service
• Ten relevant continuing education contact hours
• One approved CD workshop taught

Note that ten CE hours is one of several options, not a universal standalone renewal quota. If you want to qualify for the cheaper $150 exam-only path, plan your five years around satisfying two of these four items.

Extensions and separate obligations

Extensions of up to six months are discretionary, and you must request one at least 30 days before your credential expires. Failed exams do not qualify for an extension. Also remember that renewing your COHC is a separate matter from renewing your Course Director status, so track both calendars.

Once you hold the credential, you may wonder about its professional payoff. Those questions are addressed in Is the CD Certification Worth It? Complete ROI Analysis 2026.

Where Applicants Get Stuck

• Assuming a profession qualifies. Because the web eligibility list and the November 2025 manual differ on at least one profession, confirm in writing.
• Narrow experience. Hours concentrated in a single activity fail the three-activity rule even if they exceed 1,000.
• Late letters. Verification letters from supervisors are easiest to obtain right after the supervised course.
• Expecting to register first. Approval precedes ordinary registration, so paying early is not possible.
• Underestimating the 80% bar. Two attempts in ten days is generous scheduling but unforgiving scoring.
• Letting the credential lapse. The 30-day extension-request deadline is firm, and failed exams do not qualify.

If your goal is to teach and direct courses, the credential is the gateway to that work, and the requirements are designed to ensure that directors arrive with real field and classroom experience. For a look at the roles that depend on it, see CD Jobs.

Frequently Asked Questions