- What Is HDMASTER-NA Certification?
- Who Governs and Administers the Exam
- Knowledge Exam Format and Scoring
- The 12 HDMASTER-NA Domains
- Fee Schedule and Registration Mechanics
- Remote Proctoring vs. Test Site Requirements
- Training Hours and Attempt Limits
- Certification Renewal in California
- Who Hires HDMASTER-NA Certified Aides
- Building a Domain-Based Study Plan
- Frequently Asked Questions
- HDMASTER-NA is the California implementation of the D&S-Headmaster nurse aide knowledge exam, administered via TestMaster Universe (TMU).
- The computer-delivered knowledge exam has 75 multiple-choice questions, a 60-minute limit, and a 75% passing standard.
- Effective March 1, 2026, the knowledge exam costs $40, the audio version costs $45, and the manual skills exam costs $100.
- Basic Nursing Skills carries the most items (15) of the 12 official domains, followed by Resident Rights (8) and Safety (8).
What Is HDMASTER-NA Certification?
HDMASTER-NA refers specifically to the D&SDT-Headmaster California Nurse Aide Knowledge Exam - the computer-delivered knowledge test that California nurse aide candidates must pass, in combination with a separate manual skills examination, to become certified. It is not a generic industry credential; it is the California-specific application of the D&S-Headmaster testing program, built around the state's own candidate handbook, item bank, and scoring rules.
The content basis for the current version of the exam is the California Candidate Handbook, March 2026, version 9.0. Every question on the knowledge test is drawn from the subject areas defined in that handbook, and every registration, fee, and testing procedure described in this article reflects that same source. If you're comparing HDMASTER-NA to nurse aide exams in other states that also use Headmaster testing, be careful - the California specifications (fees, item counts, and handbook version) are distinct and should not be mixed with another state's numbers.
For a deeper dive into how this credential is named and referenced across the industry, see What Is HDMASTER-NA? and HDMASTER-NA Meaning.
Who Governs and Administers the Exam
The California Department of Public Health (CDPH) is the governing body responsible for the state's nurse aide certification program. CDPH contracts with D&S Diversified Technologies LLP/Headmaster LLP as the approved testing provider, and testing itself runs on the TestMaster Universe (TMU) platform.
This creates two separate administrative tracks that candidates must keep straight:
- TMU test registration - scheduling and paying for the knowledge and skills exams.
- CDPH 283B certification application - the paperwork required for the state registry once testing is complete.
Identifying details on both must match exactly for registry processing to go through without delay. Mismatched names, dates of birth, or Social Security information between your TMU registration and your CDPH 283B application is one of the most common reasons certification gets stuck after a candidate has already passed both exam components.
Key Takeaway
Passing HDMASTER-NA is only half the process - your CDPH 283B application details must match your TMU registration exactly, or your certificate can be delayed even after a pass.
Knowledge Exam Format and Scoring
The computer-delivered HDMASTER-NA knowledge exam follows a fixed, predictable structure:
- 75 multiple-choice questions, each with four response options.
- 60-minute time limit for the full test.
- Passing standard of at least 75% correct.
There is no partial credit and no essay or fill-in-the-blank formatting - every question is a single-best-answer, four-choice item. Because the time limit is fixed at 60 minutes for 75 items, pacing matters: candidates have roughly 48 seconds per question on average, which rewards those who have practiced recognizing question stems quickly rather than working out concepts for the first time on test day.
If you want the exact numeric passing threshold explained in more detail, along with how it's calculated against the 75-item bank, see HDMASTER-NA Passing Score 2026: Exactly What You Need to Pass.
The 12 HDMASTER-NA Domains
The California handbook publishes exact item allocations per subject rather than percentage weights, and those published counts are what candidates should study against - not a recalculated percentage. Across the 75-question exam, the official allocations are:
| Domain | Item Count |
|---|---|
| Basic Nursing Skills | 15 |
| Resident Rights | 8 |
| Safety | 8 |
| Infection Control | 6 |
| Mental Health | 6 |
| Role and Responsibility | 6 |
| Care Impaired | 5 |
| Communication | 5 |
| Aging Process and Restorative Care | 4 |
| Data Collection | 4 |
| Disease Process | 4 |
| Personal Care | 4 |
Basic Nursing Skills is by far the largest single domain, with Resident Rights and Safety tied as the next-largest content areas. Together, these three domains account for nearly half of the entire exam, which makes them the highest-leverage subjects for review time.
Basic Nursing Skills (15 items)
The largest domain on the HDMASTER-NA knowledge exam, covering the hands-on procedural knowledge nurse aides use every shift.
- Positioning, transfers, and mobility assistance
- Vital signs measurement and documentation
- Basic hygiene and comfort care procedures
Resident Rights (8 items)
Reflects California's legal framework for long-term care residents, including the statutory rights defined under state health and safety code.
- Right to privacy, dignity, and self-determination
- Grievance and complaint processes
- Restraint and abuse-reporting obligations
Safety (8 items)
Covers hazard recognition and emergency response knowledge expected of every certified aide.
- Fall prevention and body mechanics
- Fire and emergency procedures
- Safe use of equipment and restraints
For a full breakdown of every domain - including the smaller-weighted subjects like Data Collection and Personal Care that still appear on every test form - see HDMASTER-NA Exam Domains 2026: Complete Guide to All 12 Content Areas.
Fee Schedule and Registration Mechanics
Effective March 1, 2026, HDMASTER-NA testing fees in California are:
| Component | Fee |
|---|---|
| Knowledge Examination | $40 |
| Audio Knowledge Examination | $45 |
| Manual Skills Examination | $100 |
Retakes are charged using the same component fee structure - you only pay again for whichever component you failed, not the entire testing package. If a candidate needs the audio version of the knowledge exam, that selection must be made before paying the testing fee, since the audio option carries its own $45 charge rather than the standard $40.
For a complete pricing breakdown, including how the audio option and retake fees interact, read HDMASTER-NA Certification Cost 2026: Complete Pricing Breakdown.
Remote Proctoring vs. Test Site Requirements
California candidates can take the HDMASTER-NA knowledge exam either at a physical test site or through an approved remotely proctored option. Each path has distinct equipment and environment requirements.
Remote Testing Requirements
- A testing computer or tablet to take the exam itself
- A separate smartphone or tablet camera positioned to show the candidate, screen, keyboard, and mouse
- Testing alone in a quiet, secured area with no interruptions
Test Site Requirements
- The on-site proctor supplies a basic calculator and scratch paper - candidates do not bring their own
- An inspected word-for-word translation dictionary is permitted
- Dictionaries with definitions or handwritten notes, and electronic translators, are prohibited
Key Takeaway
Remote candidates need two separate devices - one for testing, one purely for camera monitoring - positioned so the proctor can see the candidate, screen, keyboard, and mouse simultaneously.
Getting the equipment setup wrong is one of the most common reasons remote sessions get flagged or delayed. A two-device checklist is worth reviewing in detail before scheduling, and general scheduling logistics are covered in HDMASTER-NA Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Training Hours and Attempt Limits
The standard approved California training program that prepares candidates for HDMASTER-NA includes 60 classroom hours and 100 supervised clinical hours. This combination of classroom instruction and hands-on clinical practice is what feeds directly into domains like Basic Nursing Skills, Personal Care, and Care Impaired on the knowledge exam.
Candidates must pass both the knowledge exam and the manual skills exam. California allows three attempts at each component, and both attempts must occur within two years after training completion. If either window closes without a pass, retraining is typically required before testing again.
Full eligibility rules, including how the two-year clock is calculated, are detailed in HDMASTER-NA Requirements 2026: Eligibility, Prerequisites & How to Qualify. If you're wondering whether retakes are logistically difficult to schedule, How Hard Is the HDMASTER-NA Exam? Complete Difficulty Guide 2026 covers that in more depth.
Certification Renewal in California
Once certified, California CNAs must renew on a biennial (two-year) cycle. Renewal requires 48 approved in-service or continuing-education hours spread across the two-year period, with a minimum of 12 hours completed in each year - meaning the hours cannot all be crammed into the final months before renewal.
- 48 total CE hours per two-year renewal cycle
- At least 12 hours must be completed in year one
- At least 12 hours must be completed in year two
This structure means active CNAs need a plan for ongoing education from day one of certification, not just a study plan for the initial knowledge and skills exams.
Who Hires HDMASTER-NA Certified Aides
Once a candidate clears both the knowledge exam and manual skills exam and their CDPH 283B application is processed, they appear on California's nurse aide registry as certified. That registry status is what employers check before hiring for direct patient-care roles such as:
- Skilled nursing facilities and long-term care homes
- Assisted living and residential care facilities
- Home health agencies
- Hospitals with nurse aide or patient-care technician positions
Because the knowledge exam's domains map directly to on-the-job duties - Basic Nursing Skills, Personal Care, Safety, Infection Control, and Resident Rights especially - employers generally treat the certification as evidence a candidate already understands core procedures on day one. For a broader look at career paths and pay considerations tied to this certification, see HDMASTER-NA Salary Guide 2026: Complete Earnings Analysis and HDMASTER-NA Jobs.
Building a Domain-Based Study Plan
Because the exam's 75 questions are distributed across 12 fixed domains, the most efficient prep approach is to allocate study time roughly in proportion to each domain's item count - not evenly across all 12 subjects.
Basic Nursing Skills (15 items) + Resident Rights (8 items)
- Review procedural steps for transfers, hygiene, and vitals
- Study California's statutory resident rights provisions
Safety (8 items), Infection Control (6), Mental Health (6), Role and Responsibility (6)
- Drill hazard recognition and emergency response scenarios
- Review standard precautions and scope-of-practice boundaries
Care Impaired (5), Communication (5), remaining 4-item domains
- Cover Aging Process and Restorative Care, Data Collection, Disease Process, Personal Care
- Take full-length 75-question practice runs under a 60-minute timer
This weighted approach - heavier review time on Basic Nursing Skills, Resident Rights, and Safety, lighter but not skipped review on the 4-item domains - mirrors the actual test blueprint rather than treating every subject equally. A full walkthrough of this method, including spaced review scheduling, is available in HDMASTER-NA Study Guide 2026: How to Pass on Your First Attempt.
Timed, 75-question practice runs on our practice test platform are the closest simulation of actual test-day pacing, since they force the same 60-minute constraint you'll face on the real exam.
Frequently Asked Questions
No. This article covers the California implementation specifically, based on the March 2026 California Candidate Handbook, version 9.0. Other states using Headmaster/D&S testing have their own fee schedules and specifications that should not be assumed to match California's.
The knowledge exam has 75 multiple-choice questions with four answer options each, and candidates have 60 minutes to complete it. A score of at least 75% is required to pass.
Effective March 1, 2026, the standard knowledge exam costs $40, the audio version costs $45, and the manual skills exam costs $100. Retakes are charged at the same rate per component.
Yes. California offers an approved remotely proctored option in addition to physical test sites. Remote candidates need a testing device plus a separate camera device to show the candidate, screen, keyboard, and mouse while testing alone in a secured area.
Candidates get three attempts at the knowledge component and three attempts at the manual skills component, both within two years after completing training. Retakes require payment for the specific failed component only.