Last updated: October 2, 2026. Sources: 42 CFR 483.35 and 483.152–483.156, the California Department of Public Health (CDPH), the Florida Board of Nursing, the Minnesota Department of Health (MDH), Credentia NNAAP handbooks, Prometric, D&S Diversified Technologies (D&SDT)-Headmaster, and the U.S. Bureau of Labor Statistics.
How Hard Is the CNA Exam? The Short Answer
The CNA exam is a moderate test. Most people who finish an approved training program pass the knowledge test on the first try. The hands-on skills test fails noticeably more people, and each retake is harder to pass than the first attempt. These are the most useful official numbers available:
- Minnesota, 2025 (MDH): 87.0% of 11,754 first-time candidates passed the knowledge test, but only 78.7% of 11,549 first-time candidates passed the skills test.
- Retakes are harder: in the same Minnesota data, the pass rate on a second attempt fell to 57.1% for the knowledge test and 73.9% for the skills test.
- Florida, 2025 (Board of Nursing): 89.08% of 5,596 first-time candidates from approved training programs passed. Florida has an unusual rule: if you finished an approved program within the last six months, you take only the written test.
There is no national CNA pass rate. Each state chooses its own testing vendor and decides whether and how to publish results. If a site quotes a single national percentage, ask where it came from.
Four things make the exam harder than people expect:
- There are two separate tests. Federal rules require you to pass both a written or oral knowledge test and a hands-on skills demonstration (42 CFR 483.154(e)).
- Some steps are pass/fail. Credentia, Headmaster, and California's Regional Testing Center mark certain steps as critical or key; miss one and you fail that skill. With every vendor, failing one skill fails the whole skills test.
- Measurements have tight tolerances. On the NNAAP exam, your radial pulse count must be within 4 beats of the evaluator's count and your respiration count within 2 breaths.
- Your vendor changes the test. Credentia, Prometric, and D&SDT-Headmaster use different question counts, time limits, passing standards, and numbers of skills. Some states also let programs choose between vendors.
What Federal Law Sets and What Your State Decides
The federal nursing home rules (often called OBRA '87) set the minimums. Your state can add more.
| Requirement | Federal minimum | What your state can change |
|---|---|---|
| Training | At least 75 clock hours, including at least 16 hours of supervised practical training (42 CFR 483.152(a)) | Total hours: Missouri requires 175 and California 160 |
| Before resident contact | 16 hours on communication, infection control, safety and emergency procedures (including the Heimlich maneuver), resident independence, and residents' rights | How the program schedules it |
| Knowledge test | Written or oral exam (you choose), drawn from a secure question pool | Number of questions, time limit, passing standard |
| Skills test | Randomly selected tasks, scored by a registered nurse with at least 1 year of experience caring for elderly or chronically ill people | Number of skills, time limit, scoring rule |
| Passing | You must pass both parts | Cut scores |
| Attempts | At least 3 opportunities; a state may set a limit but not below 3 (42 CFR 483.154(f)) | Time window and retraining rules |
| Working while you test | A nursing facility cannot use you as a full-time nurse aide for more than 4 months until you pass (42 CFR 483.35(d)) | State registry rules |
| Staying certified | 24 months in a row without paid nursing work means new training or a new competency evaluation (42 CFR 483.35(d)) | Renewal forms, continuing education, fees |
CNA Pass Rates: What the Official Data Shows
| Source | Period | Knowledge / written test | Skills test |
|---|---|---|---|
| Minnesota Department of Health | 2025, first attempt | 87.0% (11,754 candidates) | 78.7% (11,549 candidates) |
| Minnesota Department of Health | 2025, second attempt | 57.1% (1,063 candidates) | 73.9% (1,813 candidates) |
| Minnesota Department of Health | 2025, third or later attempt | 49.2% (449 candidates) | 70.2% (299 candidates) |
| Florida Board of Nursing | 2025, first attempt | 89.08% total first-time pass rate (4,985 of 5,596) | Most candidates were exempt |
| Florida Board of Nursing | April–June 2026, first attempt | 90.36% total first-time pass rate (2,061 of 2,281) | Most candidates were exempt |
Minnesota's numbers include everyone who tested from an approved program, plus people who challenged the exam without training. D&SDT-Headmaster administers the Minnesota exam.
What These Numbers Tell You
- The skills test is the main obstacle. Minnesota's first-time skills pass rate was 8.3 percentage points lower than its knowledge rate.
- Plan to pass the first time. After a first failure, Minnesota's knowledge pass rate dropped to 57.1%. If you fail once, rebuild your study plan before you retest.
- Florida's rate reflects its rules. Florida program graduates who apply within six months take only the written test. Its 2025 report lists just 95 clinical skills candidates from approved programs. That makes Florida's total rate a poor guide to how hard a skills test is.
- Older figures are stale. The often-quoted "87% in Florida" figure came from a single quarter (January–March 2024, 87.14%). Florida's 2025 annual report shows 89.08%.
Why the Skills Test Fails More People
No vendor requires a "perfect" performance on every step. But with Credentia, Headmaster, and the Regional Testing Center, one missed critical step fails the skill, and with every vendor, one failed skill fails the whole skills test. Here is how each scoring system works:
| Credentia (NNAAP) | Prometric | D&SDT-Headmaster (California) | Regional Testing Center (California) | |
|---|---|---|---|---|
| Skills tested | 5: hand hygiene, one measurement skill, and 3 more chosen at random | 5 scored: Handwashing, Indirect Care, and 3 assigned skills | 3 or 4 tasks; the first is a required task that includes hand washing | 5: handwashing plus 4 random skills, one of them a measurement |
| Time | 30 minutes | 31–40 minutes, depending on the skills | 30 minutes | 30 minutes |
| To pass a skill | Every critical element step, plus enough other steps to meet that skill's cut score | Show competency on the skill's checkpoints; you do not have to be perfect | Every bold critical step plus 80% of the other steps | Every key step plus at least 70% of the skill |
| To pass the test | Satisfactory on all 5 skills | Pass all 5 skills | Pass every task | Pass 5 of 5 skills |
Sources: Credentia California and Pennsylvania handbooks, the Prometric Florida Candidate Information Bulletin, the Headmaster California Candidate Handbook (March 2026), and the Regional Testing Center handbook (January 2026).
Where Candidates Lose Skills Points
Prometric scores Indirect Care during every skill except handwashing. Its public Indirect Care Behaviors guide lists what the evaluator watches for, including:
- Not touching the resident before your hands are clean, and ending every skill with clean hands
- Taking off gloves without contaminating yourself, any time you wear them
- Knocking or announcing yourself, and calling the resident by name rather than "honey"
- Closing the privacy curtain before care (it is not required for ambulation, feeding, hand and nail care, pulse, respirations, or transfer)
- Asking about water temperature during bathing-type skills
- Leaving the call light within reach and the bed in its low position at the end of each skill
Hand-washing technique counts, too. Prometric's public Clinical Skills Checklist requires at least 20 seconds of friction with lathered hands, then ending without touching the faucet or sink again. In Florida, two nurses watch your handwashing during the first skill. After that, it is scored as part of Indirect Care.
Every vendor lets you correct a mistake: tell the evaluator which step you are correcting, then actually perform it. With Credentia, Prometric, and the Regional Testing Center, you cannot go back once you finish a skill and start the next one. Headmaster's California handbook lets you correct steps on any task until your 30 minutes run out or you tell the observer you are finished.
Which CNA Skills Are Hardest? What the Public Checklists Show
No testing vendor publicly ranks CNA skills by failure rate, so be wary of any precise "most failed skill" statistic. The closest public data point comes from a state agency: the Missouri Department of Health and Senior Services listed blood pressure, pulse, and respirations as the most missed skills on tests taken September–November 2022. The public checklists also show where the skills test is least forgiving. The table below is not a ranking.
| What makes a skill hard | Skills affected | What Prometric's public checklist requires |
|---|---|---|
| A number you must get right | Radial pulse, respirations, urinary output, food and fluid intake | Count for one full minute; pulse within 4 beats per minute, respirations within 2 breaths, output within 50 mL, intake within 25% |
| Long checklists | Partial bed bath and back rub (26 checkpoints), bed-to-wheelchair transfer (24), perineal care (22) | Every step must be performed, not just described |
| Direction and cleanliness rules | Perineal care, catheter care | Wipe front to back, use a clean spot on the washcloth for each stroke, rinse off soap, and clean the catheter away from the body for at least 3–4 inches |
| Safety setup before moving the resident | Transfer, ambulation | Footrests out of the way, nonskid footwear on, feet flat, wheelchair locked, and a gait belt snug enough that only flat fingers fit under it |
| Exact joints and sides | Range of motion | Exercise only the joints and side in the instructions, support the limb, do three repetitions, and ask about discomfort |
| Feeding pace | Feeding | Sit while feeding, offer a drink at least every 2–3 bites, and record intake within 25% |
More checkpoints means more to remember, not necessarily a higher failure rate.
What About Blood Pressure?
Prometric's Florida Candidate Information Bulletin lists 20 clinical skills, plus Handwashing and Indirect Care, and none of them is blood pressure. NNAAP states test either electronic blood pressure or manual blood pressure, depending on the state. On the manual version, your systolic and diastolic readings must each be within 8 mmHg of the evaluator's. Headmaster's California manual blood pressure task allows a difference of only 6 mmHg. None of the vendors we reviewed publish a failure rate for blood pressure, so treat claims like "18% fail blood pressure" as unsourced. Missouri's 2022 list of most missed skills does include blood pressure, along with pulse and respirations, so practice it until you are consistently within tolerance if your state tests it.
Measurement Tolerances You Must Hit
| Measurement | Credentia (NNAAP) | Prometric | Headmaster (California) |
|---|---|---|---|
| Radial pulse | Within 4 beats | Within 4 beats per minute | Within 4 beats |
| Respirations | Within 2 breaths | Within 2 breaths per minute | Within 2 breaths |
| Urine output | Within 25 mL (round up to the nearest 25 mL) | Within 50 mL | Within 25 mL |
| Manual blood pressure | Within 8 mmHg | Not tested | Within 6 mmHg |
| Weight | Within 2 lb | Not listed | Not listed |
| Food and fluid intake | Not listed | Within 25% | Food within 25 percentage points; fluids within 30 mL |
Count pulse and respirations for a full 60 seconds. Every checklist in this table requires a full minute, so counting for 30 seconds and doubling does not meet the standard. For manual blood pressure, NNAAP's checklist has you inflate the cuff to 160–180 mmHg. If you hear a beat right away, deflate completely and re-inflate, but to no more than 200 mmHg. Round readings up to the nearest 2 mmHg.
For full step-by-step checklists, see our CNA clinical skills test guide.
The Knowledge Test: Formats and Traps
| Vendor or program | Questions | Time | Published passing standard |
|---|---|---|---|
| Credentia NNAAP (written) | 70, including 10 unscored pretest items | 2 hours (Pennsylvania handbook) | No percentage published |
| Credentia NNAAP (oral) | 60 multiple-choice plus 10 reading-comprehension items | 2 hours (Pennsylvania handbook) | You must pass both sections |
| Prometric (Florida) | 60 | 90 minutes | Not stated in the Florida bulletin |
| D&SDT-Headmaster (California) | 75 | 60 minutes | 75% |
| D&SDT-Headmaster (Michigan) | 65 | 60 minutes | 74% |
| Regional Testing Center (California) | 70 | 120 minutes | 70% |
Minnesota's Headmaster knowledge test has 70 questions and requires 52 correct answers (74%), according to MDH. MDH says the Minnesota knowledge test is written below a 6th-grade reading level. The challenge is judgment, not vocabulary.
What the NNAAP covers (2024 content outline, effective October 2024): Physical Care Skills make up 64% of the scored items: Activities of Daily Living 22%, Basic Nursing Skills 35%, and Self-Care and Independence 7%. Psychosocial Care Skills make up 10%: Emotional and Mental Health Needs 8% and Spiritual and Cultural Needs 2%. Role of the Nurse Aide makes up 26%: Communication 7%, Client Rights 8%, Legal and Ethical Behavior 5%, and Member of the Health Care Team 6%.
What Prometric covers (Florida bulletin):
| Prometric content area | Share of the test |
|---|---|
| Role of the Nurse Aide | 20% |
| Promotion of Safety | 22% |
| Promotion of Function and Health of Residents | 20% |
| Basic Nursing Care Provided by the Nurse Aide | 24% |
| Providing Specialized Care for Residents with Changes in Health | 14% |
The Question Types That Cost Points
- "What should the nurse aide do FIRST?" Several answers may be correct actions. Choose the one that protects the resident right now. Then think: gather information, report to the nurse, and document.
- Scope-of-practice traps. Answers that involve giving medication (unless your state certifies you as a medication aide), sterile procedures, diagnosing, or giving medical advice are usually outside a CNA's role. The best answer is usually to report to the nurse.
- Residents' rights. Expect questions on privacy, confidentiality, refusing care, personal possessions, freedom from restraints, abuse reporting, and making complaints without retaliation.
- Infection control details. Know when to use soap and water instead of alcohol rub (visibly soiled hands, and care of residents with C. difficile or norovirus). Know that standard precautions apply to every resident, and which PPE goes with contact, droplet, and airborne precautions.
- Qualifiers. Read for FIRST, BEST, MOST important, and EXCEPT before you look at the answer choices.
On answer-changing: studies of exams consistently find that changed answers go from wrong to right more often than from right to wrong. Change an answer when you have a concrete reason, not because of nerves.
Your Vendor and State Change the Test
Vendors list their own states. As of October 2026:
- Credentia lists NNAAP testing for Alabama, Alaska, California, Colorado, Georgia, Iowa, Maryland, North Carolina, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Washington, and DC.
- Prometric lists Alabama, Connecticut, Delaware, Florida, Hawaii, Idaho, Louisiana, New York, Oklahoma, and Texas.
- D&SDT-Headmaster lists more than 20 programs, including Arizona, California, Michigan, Minnesota, Missouri, Ohio, Oregon, and Wisconsin.
Pearson VUE no longer gives the NNAAP. Credentia's handbooks state that Credentia now develops and manages the exam.
| State | Minimum training (state rule or agency) | Who tests you |
|---|---|---|
| Alabama | 75 hours, including 16 clinical | Prometric or Credentia (your program chooses) |
| Arizona | 120 hours (40 classroom, 20 lab, 40 clinical, and 20 the program assigns) | D&SDT-Headmaster |
| California | 160 hours (60 classroom + 100 supervised clinical) | D&SDT-Headmaster, Credentia, or the Regional Testing Center |
| Florida | 120 hours for approved programs; you can also challenge the exam without training | Prometric |
| Georgia | 85 hours | Credentia |
| Illinois | 120 hours (80 theory + 40 clinical) | Southern Illinois University Carbondale, for the Illinois Department of Public Health |
| Michigan | 75 hours | D&SDT-Headmaster |
| Minnesota | 75 hours | D&SDT-Headmaster |
| Missouri | 175 hours (75 classroom + 100 supervised on-the-job) | D&SDT-Headmaster |
| New York | 100 hours, including 30 supervised clinical (a proposal to cut this to 75 hours stalled after a September 2026 council vote) | Prometric |
| Ohio | 75 hours (59 classroom and skills + 16 supervised clinical) | D&SDT-Headmaster |
| Oregon | 105 hours (37 classroom, 28 lab, 40 clinical) | D&SDT-Headmaster |
| Pennsylvania | 80 hours, including 37.5 supervised clinical | Credentia |
| Texas | 100 hours (60 classroom + 40 clinical) | Prometric |
| Virginia | 140 hours, including at least 40 clinical | Credentia |
| Washington | 108 hours (35 classroom, 33 skills lab, 40 clinical) | Credentia |
California has three vendors. CDPH approves D&SDT-Headmaster, Credentia, and the Regional Testing Center at Golden West College. They differ in important ways:
- Headmaster: 75 questions in 60 minutes, 75% to pass, and 3 or 4 skill tasks.
- Credentia (NNAAP): 70 items and 5 skills.
- Regional Testing Center: 70 questions in 2 hours, 70% to pass, and 5 skills.
Under all three, you get 3 attempts within 2 years of finishing training.
For state-by-state details, see our free CNA practice test by state guide and state guides for Michigan, Minnesota, Ohio, Oregon, Pennsylvania, Virginia, and Washington.
Cost, Retakes, and Time Limits
| State and vendor | Both parts | Written or knowledge retake | Skills retake |
|---|---|---|---|
| California, Headmaster (from March 1, 2026) | $140 | $40 ($45 audio) | $100 |
| California, Regional Testing Center | $120 | $40 ($55 audio) | $80 |
| Florida, Prometric | $155 | $35 | $120 |
| Pennsylvania, Credentia | $135 | $50 | $85 |
- You may not have to pay. Under federal rules, a nurse aide employed by a nursing facility, or offered a job there, when starting the program cannot be charged for training or testing. If a nursing facility hires you within 12 months of finishing, it must reimburse you pro rata (42 CFR 483.152(c) and 483.154(c)).
- You usually retake only the part you failed. Every fee schedule above prices the written and skills retakes separately.
- Attempt limits differ. California allows 3 attempts within 2 years of finishing training. North Carolina allows 3 attempts or 2 years, whichever comes first. Minnesota allows 4 knowledge attempts and 3 skills attempts. After 3 failures in Florida, you need at least 120 hours of approved training before you can test again. In California's NNAAP program, failing either part 3 times means retraining and retaking both parts.
How to Pass on Your First Attempt
Skills Test
- Practice from your vendor's own checklist. Use the NNAAP skills list in your Credentia handbook, Prometric's Clinical Skills Checklist, or your Headmaster candidate handbook. Generic skill lists miss vendor-specific steps.
- Practice measurements until you are within tolerance. Have a partner take the same pulse, respiration, or urine reading and compare. Keep practicing until you are within 4 beats, 2 breaths, and your vendor's mL limit every time.
- Use the same opening and closing for every skill. To open: greet the resident, explain, provide privacy, wash or sanitize your hands, and put on gloves when needed. To close: bed low, call light in reach, gloves off, hands clean, and any measurement recorded before you say "done."
- Say your corrections out loud. If you catch a mistake, tell the evaluator which step you are fixing, perform it, and only then move to the next skill.
- Time yourself. NNAAP gives you 30 minutes for 5 skills. Practice whole sets under that limit.
Knowledge Test
- Take timed practice tests in your vendor's format. For example, 70 items in 2 hours for NNAAP or 75 in 60 minutes for Headmaster California.
- Learn the boundaries of your role. When in doubt, choose the answer that keeps the resident safe and reports to the nurse.
- Use the oral option if reading is a barrier. Federal rules let you choose an oral exam instead of the written one.
- Review the areas you missed. Failing score reports list the areas or skill steps you missed. Use them to plan your retest.
Start with our free CNA practice questions, then use the CNA flashcards and the CNA cheat sheet for quick review.
Keeping Your CNA Certification After You Pass
Federal rules set the minimum: if you go 24 months in a row without paid nursing or nursing-related work, you must retrain or retest. States add their own requirements:
- Pennsylvania: at least one documented 8-hour day of paid nurse aide work in each 24-month period.
- North Carolina: at least 8 hours of paid, RN-supervised nurse aide work in each 24-month listing period.
- Arizona: at least 8 paid hours of nursing assistant work in the last 2 years.
- California: 48 hours of in-service training or continuing education in each 2-year certification period, plus qualifying paid work.
- Florida: 24 hours of in-service training each 2-year renewal period and a $55 renewal fee if you renew on time.
- Texas: 24 hours of in-service education every two years.
- Michigan: starting March 23, 2026, you must attest to at least 12 hours of continuing education per year.
Is Becoming a CNA Worth the Effort?
The Bureau of Labor Statistics (updated August 27, 2026) reports:
- Pay: the median annual wage for nursing assistants was $42,260 in May 2025. The lowest 10% earned less than $33,940 and the highest 10% more than $51,980.
- Pay by employer: government $47,050, nursing care facilities $43,000, and hospitals $42,310.
- Jobs: nursing assistants held 1,505,900 jobs in 2025.
- Outlook: employment of nursing assistants and orderlies is projected to grow 3% from 2025 to 2035, with about 203,300 openings a year.
Many CNAs go on to nursing school. BLS lists 2025 median pay of $64,400 for LPNs and LVNs and $97,550 for registered nurses. See our CNA salary guide, CNA to LPN bridge guide, and CNA to RN pathway.
Free CNA Prep on OpenExamPrep
All OpenExamPrep CNA study materials are free:
- CNA practice questions for the knowledge test
- CNA study guide for the full content outline
- CNA flashcards and CNA cheat sheet for quick review
- CNA clinical skills test guide for step-by-step skill practice
Official Sources
- 42 CFR 483.152, Nurse aide training program requirements
- 42 CFR 483.154, Nurse aide competency evaluation
- CDPH, Certified Nurse Assistant Testing Vendors
- D&SDT-Headmaster California Nurse Aide testing
- Regional Testing Center CNA exam (Golden West College)
- Credentia nurse aide test-taker states
- Prometric Florida Nurse Aide exam
- Prometric Florida CNA Candidate Information Bulletin
- Prometric Clinical Skills Checklist
- Prometric Indirect Care Behaviors
- Florida Board of Nursing CNA pass rate reports
- Missouri Department of Health and Senior Services, CNA testing results (December 2022)
- Minnesota Department of Health nurse aide test data
- BLS Occupational Outlook Handbook: Nursing Assistants and Orderlies






