- You need at least 75% correct on the 75-question knowledge exam to pass.
- That means roughly 56 correct answers out of 75 questions in 60 minutes.
- Basic Nursing Skills carries 15 items, the largest single content area on the exam.
- You get three attempts at the knowledge exam within two years of finishing training.
The Official Passing Standard
The D&SDT-Headmaster California Nurse Aide Knowledge Exam (HDMASTER-NA) has one published passing standard: candidates must score at least 75% on the computer-delivered knowledge examination to pass that component. There is no curve, no "scaled score" conversion, and no separate cut score by domain - the 75% threshold applies to your overall performance across all 75 questions.
That single number is easy to state but often misunderstood. Candidates sometimes assume a passing score means memorizing isolated facts until test day, or that some content areas matter more than others for grading purposes. In reality, the California Candidate Handbook (March 2026, version 9.0) treats every correctly answered question the same - a question from Personal Care counts exactly as much toward your 75% as a question from Basic Nursing Skills. What differs is how many questions come from each area, which is a scheduling and study-time issue, not a scoring-weight issue.
Exam Format and What the Score Actually Measures
Before you can interpret a passing score, you need to understand exactly what you're being scored on. The knowledge exam is 75 multiple-choice questions, each with four response options, delivered on a computer within a 60-minute limit. There is no partial credit for eliminating two wrong answers - you either select the correct option or you don't.
Because the exam is knowledge-based rather than skills-based, your score reflects recall and applied clinical judgment across the topics a working nurse aide encounters daily: resident safety, communication with impaired residents, infection control routines, and documentation basics. It does not test hands-on technique - that's covered separately by the manual skills examination, which candidates must also pass. If you want a full breakdown of how the knowledge and skills components differ in structure and preparation, the written vs. skills comparison is covered in more depth elsewhere on this site, but for scoring purposes, remember: the 75% standard applies specifically to the knowledge exam discussed here.
If you're still building foundational understanding of what this credential covers before diving into scoring mechanics, start with What Is HDMASTER-NA? or the broader HDMASTER-NA Certification overview.
How Domain Weighting Affects Your Score
The 75 questions are not distributed evenly across the 12 content areas. The California specifications publish exact item counts per domain, and those counts - not percentages - are the official figures candidates should study from:
| Domain | Published 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 |
Notice that Basic Nursing Skills alone accounts for 15 of the 75 questions - a full fifth of the exam. Resident Rights and Safety follow at 8 questions each. Missing several questions in Basic Nursing Skills has an outsized effect on whether you clear 75%, simply because there are more chances to lose points there than in a four-question domain like Personal Care.
This doesn't mean you can skip the smaller domains - a weak showing across several four- and five-question areas adds up just as fast. It means your study hours should roughly mirror the published item counts rather than being split evenly across all 12 domains. For a full walkthrough of what each domain actually covers and sample question styles, see the HDMASTER-NA Exam Domains Guide.
Basic Nursing Skills (15 questions)
The largest domain on the exam. Covers vital signs, positioning and transfers, feeding assistance, bedmaking, elimination care, and basic comfort measures.
- Prioritize this domain first when scheduling study time
- Expect scenario-based questions, not just definitions
- Review both the "how" and the "why" behind each procedure
Resident Rights (8 questions)
Tied closely to California statute on resident dignity, privacy, and consent. Frequently tested through scenario questions asking what a nurse aide should do.
- Know the difference between reporting and acting unilaterally
- Understand grievance and privacy protections specific to long-term care residents
What Happens If You Miss the Score
Falling short of 75% is not the end of the road, but it does have real cost and time implications. Candidates get three attempts at the knowledge exam and three attempts at the manual skills exam, each within two years after completing an approved training program. If you don't pass the knowledge exam on your first sitting, you can retake it - but retakes require paying the fee for the failed component again, whether that's the $40 standard knowledge exam or the $45 audio version.
Passing both components is mandatory; passing skills does not offset a failed knowledge attempt, and vice versa. If you're unsure how many attempts you've used or how the two-year window is tracked, review the eligibility rules in the HDMASTER-NA Requirements guide before scheduling a retake.
Key Takeaway
Treat every attempt as if it might be your last practical one - retakes cost money and eat into your two-year window. Close the gap between "close to 75%" and "comfortably above 75%" before you sit the exam.
Remote Testing, Fees, and Score Consistency
The passing standard is identical whether you test at a physical test site or through the approved remotely proctored option - the score requirement doesn't shift based on delivery method. What changes is the environment you need to control to avoid losing points to avoidable errors.
Remote candidates need a testing computer or tablet plus a separate smartphone or tablet camera angled to show the candidate, screen, keyboard, and mouse simultaneously, and must test alone in a quiet, secured space. Getting flagged or interrupted mid-exam wastes time you need for those 75 questions in 60 minutes. On-site candidates are supplied a basic calculator and scratch paper by the proctor; an inspected word-for-word translation dictionary is allowed, but dictionaries with definitions, handwritten notes, or electronic translators are prohibited. If you plan to use the audio version of the exam, you must select that option before paying the testing fee - not after.
For a full setup checklist covering both testing paths, the fee schedule effective March 1, 2026, and how remote scheduling works through TestMaster Universe, see HDMASTER-NA Certification Cost and HDMASTER-NA Exam Dates.
A Domain-Focused Prep Schedule
Rather than studying all 12 domains equally, build your schedule around the published item counts. This is one of the few places generic study techniques - spaced repetition, short focused review blocks - actually map onto something concrete: the domains with more questions deserve more repetition cycles before test day.
Basic Nursing Skills + Safety
- Cover vital signs, transfers, and comfort care procedures
- Layer in Safety topics like body mechanics and fall prevention
- Use short daily review sessions rather than one long cram block
Resident Rights, Infection Control, Role and Responsibility
- Study California-specific resident rights language
- Drill standard precautions and PPE sequencing
- Clarify scope-of-practice boundaries for a nurse aide
Mental Health, Care Impaired, Communication
- Practice scenario questions on dementia and cognitive impairment care
- Review therapeutic communication approaches
- Revisit Week 1 material with spaced repetition flashcards
Remaining domains + full simulation
- Cover Aging Process, Data Collection, Disease Process, and Personal Care
- Take a full 75-question, 60-minute timed simulation
- Review missed questions by domain, not just overall score
For a more detailed week-by-week breakdown with sample question phrasing, the HDMASTER-NA Study Guide expands on this same structure. You can also run a full-length practice simulation modeled on the actual 75-question format at the main practice test hub to gauge whether you're consistently landing above 75% before you schedule your real exam.
Common Reasons Candidates Fall Short
Most candidates who miss the 75% mark don't fail because they knew nothing - they fail because of a handful of predictable gaps:
- Underestimating Basic Nursing Skills. With 15 questions, this domain alone can swing a borderline score in either direction.
- Treating all domains equally in study time. Spending equal hours on a 4-question domain and a 15-question domain leaves you under-prepared where it matters most.
- Running out of time. 75 questions in 60 minutes leaves under a minute per question on average - practicing under timed conditions matters as much as content review.
- Mismatched paperwork. Registration issues between your TMU test registration and the CDPH 283B certification application can delay your ability to sit for the exam at all, separate from scoring. Details on avoiding this are covered in the requirements guide linked above.
- Skipping realistic practice conditions. Studying flashcards without ever simulating the full 75-question, four-option, timed format leaves candidates unprepared for exam pacing.
If you're trying to gauge overall difficulty before committing to a test date, How Hard Is the HDMASTER-NA Exam? walks through what makes this exam challenging beyond just the passing number, and HDMASTER-NA Pass Rate looks at what the available data shows about candidate outcomes.
Frequently Asked Questions
You need at least 75% correct across the 75 multiple-choice questions, which works out to roughly 56 correct answers within the 60-minute time limit.
No - every question counts equally toward your overall percentage. Basic Nursing Skills simply has more questions (15 versus 4), so weak performance there has more opportunities to lower your score.
You get three attempts at the knowledge exam within two years after completing your approved training program. Each retake requires paying the applicable component fee again.
No, the 75% passing standard is the same regardless of delivery method. Remote testing simply requires additional equipment, including a second camera device, and a quiet secured testing space.
Yes. Both components must be passed independently, each with its own three-attempt limit within the two-year window, and each with its own fee for retakes.