FREE NNAAP Study Guide 2026: The Nurse Aide Exam, Explained

This free NNAAP study guide explains exactly how the exam you take to become a nurse aide works — start to finish. The National Nurse Aide Assessment Program (NNAAP) is the competency exam most U.S. states use to certify nurse aides, the credential most people simply call the CNA.^[1]

There are two parts, and you must pass both: a written (or oral) knowledge test and a hands-on skills evaluation. This guide walks through the structure, scoring, states, fees, and test day for each part — the things candidates get tripped up by that have nothing to do with nursing technique.^[2]

Read it module by module, then prove it with our NNAAP practice test and flashcards. We teach to the national NNAAP framework; some states use a different vendor (such as Prometric), so always confirm the specifics with your state nurse aide registry.

NNAAP at a Glance

Certification hinges on two separate results: the knowledge test and the hands-on evaluation. You must pass both to be listed on your State Nurse Aide Registry and work as a CNA.^[7]

Module 1 · The Written (Knowledge) Test

The written test is the multiple-choice half of the NNAAP — the part most candidates picture when they think “the CNA test.” It checks that you know the safe, correct answer; the skills evaluation checks that you can do it.^[2]

Format, Questions & Time

The NNAAP written test has 70 multiple-choice questions and a 2-hour time limit. Of those 70, 60 are scored and 10 are unscored pretest items that Credentia is trialing for future exams — but because they look identical to scored questions, answer every one as if it counts.^[2] Each question has four answer choices and exactly one best answer; there is no penalty for guessing, so never leave a question blank.

The Content Areas It Tests

The 60 scored questions are spread across three broad categories — Physical Care Skills (64%), Role of the Nurse Aide (26%), and Psychosocial Care Skills (10%) — which Credentia divides into nine specific content areas, each with its own share of the test.^[3] Basic Nursing Skills (35%) is the single largest area, so it earns the most study time.

This guide keeps the content areas at a high level on purpose — the CNA study guide teaches each one in depth, organized into the same three categories, with worked scenarios, diagrams, and the high-yield numbers (vital-sign ranges, the PPE order, the “weak side first” rule). Use it to actually learn the material; use this page to understand how the test packages and weights it.

The Oral Option

If you read English with difficulty, most NNAAP states offer an oral examination instead of the standard written test. The oral version has 60 multiple-choice questions read aloud to you plus 10 separate reading-comprehension questions, and it tests the same content areas at the same passing standard.^[2] Availability and the languages offered (such as Spanish) vary by state, and you typically must request the oral version when you register — so plan ahead.

Module 2 · The Skills Evaluation

The skills evaluation is the hands-on half of the NNAAP — and the part candidates fail most often, usually on the rules of the testrather than the nursing technique. Master how it’s structured first; then rehearse the individual skills (taught step-by-step in the CNA study guide).^[5]

How the 5-Skill Test Works

You perform five skills in about 30 minuteson a live volunteer who plays the “client,” and you must pass 5 of 5.^[5] The composition is fixed in a useful way:

• Skill 1 is always hand hygiene (handwashing) — it’s guaranteed, so perfect it.
• One skill is always a measurement skill — blood pressure, radial pulse, respirations, weight, or urinary output — recorded within the official tolerance.
• The other three are randomly selected from the full skills list, so you can’t predict them — prepare them all.

Critical Element Steps

Each skill has a checklist, and the bolded steps on it are Critical Element Steps: the make-or-break actions that protect safety, infection control, or the resident’s body. Miss or wrongly perform a single one and you automatically fail that entire skill, no matter how well you did everything else.^[5] You must alsoreach each skill’s overall cut score, so don’t skip the “minor” steps either.

The Indirect-Care Frame

Indirect care — communication, privacy, dignity, and safety — is scored inside every single skill, not tested as its own skill.^[5] Build the same beginning-and-ending frame around every skill until it’s automatic, and you protect points on all five at once.

The Skills You Could Be Assigned

Because three skills are random, treat every skill on the NNAAP list as fair game. They group into ADL/personal care, elimination, transfer/mobility, infection control, range of motion, and measurement.^[5] Below are the most commonly assigned skills with the single make-or-break element for each — the full step-by-step technique is in the CNA study guide.

Beating the 30-Minute Clock

Time is the hidden enemy of the skills test. You have about 30 minutes for all five skills — roughly 5–6 minutes each — and the evaluator usually gives a 5-minute warning near the 25-minute mark.^[5] An incomplete skill when time runs out is scored as a fail, so keep moving and don’t over-polish one skill at the expense of finishing the rest.

Module 3 · Eligibility, States & Registration

Before you can sit the NNAAP you must be eligible, and which test you take depends on your state. This module covers the paperwork side: training requirements, the state-by-state vendor split, and how to register and pay.

Eligibility & Training (OBRA ’87)

Federal law — the Omnibus Budget Reconciliation Act of 1987 — requires every nurse aide in a Medicare/Medicaid-certified facility to complete a state-approved training program and pass a competency evaluation (the NNAAP’s two parts).^[6] The federal minimum is 75 clock hours, including at least 16 hours of supervised clinical training, before you can test.

Many states require more — California requires 160 hours and Florida 120, for example — and most also set a minimum age and a criminal background check.^[6] Confirm your state’s hours, age, and documentation rules with its nurse aide registry before you enroll.

NNAAP States vs Other Vendors

Not every state uses the NNAAP. Most U.S. states contract with Credentia to deliver the NNAAP (Credentia took over from Pearson VUE around 2018–2019), but a number of states use Prometric and some use a state-specific or other vendor — each with its own handbook, format, and skills list.^[1] This guide teaches to the NNAAP; if your state uses a different vendor, the structure here is a close guide but verify the specifics.

One practical upside of a national program: many states honor an active certification from another state through reciprocity, though you apply to the receiving state’s registry and meet its rules. If you might move, check both states’ reciprocity policies.

How to Register

In NNAAP states you register through Credentia once your training program confirms your eligibility, then pay the exam fees and schedule both parts — the written (or oral) test and the skills evaluation.^[1] You can often test at a regional or in-facility test site (a school, nursing home, or testing center), and some written tests are delivered at Pearson VUE-affiliated centers.

The name on your registration must match your government-issued photo ID exactly, and fees are non-refundable — so double-check your details and your test date before you submit.

Fees & Retakes

Fees are set by state. As an example, one Credentia state handbook lists about $45 for the written exam and about $95 for the skills evaluation — near $140 combined for a first-time candidate taking both together.^[4] A new fee is required for each part you retake, and most states cap attempts (commonly three) within a set window before you must retrain.

Module 4 · Scoring, Test Day & After

The last piece is what happens on and after exam day — how each part is scored, how to walk in prepared, and how you get onto (and stay on) the registry.

How the NNAAP Is Scored

You must pass both parts independently — passing one does not carry the other, and you can retake just the part you failed.^[7] The written test is scored on a scaled cut score set by NCSBN/Credentia and your state, not a fixed raw percentage, so different test forms are equally hard to pass.

The passing standard is commonly reported around 70–80% correct, but the exact cut is confidential and can vary, so aim comfortably above it. Only the 60 scored questions count; the 10 pretest items do not.

The skills evaluation is pass/fail per skill — you pass each skill by performing its required steps (including every Critical Element) correctly, and you pass the evaluation by passing all five.^[5]

What to Expect on Test Day

Arrive at least 15 minutes early and bring a valid, unexpired government-issued photo ID whose name matches your registration exactly.^[5] You’ll store your phone and personal items; no notes are allowed. You complete the written (or oral) test within the 2-hour limit and perform your five skills within about 30 minutes during the skills evaluation, in whichever order your site schedules them.

Results, the Registry & Renewal

Many states provide a preliminary result the same day, with official confirmation and registry placement to follow.^[8] Once you pass both parts you’re added to your State Nurse Aide Registry and can work as a CNA in a certified facility.

To stay certified you must keep working: under OBRA ’87’s 24-month rule, an aide who performs no paid nursing-related duties for 24 consecutive months must re-test.^[8] Most states also require recertification (typically every two years) with proof of recent paid work and sometimes in-service hours — rules vary, so check your state.

How to Use This Study Guide

This guide explains how the NNAAP works; pair it with the resources that teach what’s on it for a complete system:

• Learn how the test works here first. Know the two parts, the 5-skill structure, Critical Element Steps, the indirect-care frame, scoring, and your state’s vendor before you study content — it changes how you study.
• Master the clinical content in the CNA study guide. It teaches every NNAAP content area in depth — vital signs, infection control, ADLs, resident rights, and each skill’s steps. Weight your time toward Physical Care Skills (64%).
• Drill, then prove it. Take each module’s checkpoint above, then run the NNAAP practice test and flashcards. Retrieval beats re-reading.
• Rehearse the five skills out loud. Wrap the introduce → privacy → perform → call light + bed-low frame around every skill until it’s automatic, and recite each skill’s critical element.
• Check your readiness. Aim for the blue or green band (80%+) on the readiness ring before you book your test date.

We teach to the national NNAAP framework. Because some states use Prometric or a state-specific vendor and set their own training-hour, fee, and renewal rules, always confirm the specifics with your state nurse aide registry before you test.

NNAAP Glossary

The essential NNAAP testing terms — hover any dotted term throughout the guide, or flip the whole set as a self-grading deck below.

24-month rule

An OBRA '87 rule: a nurse aide who does not perform paid nursing-related duties for 24 consecutive months must re-test to stay on the registry.

candidate handbook

Credentia's state-specific guide with the rules, skills checklists, fees, and scheduling details for taking the NNAAP in your state.

CMS

The U.S. Centers for Medicare & Medicaid Services — the federal agency whose 42 CFR Part 483 rules (under OBRA '87) set nurse aide training, testing, and registry requirements.

CNA

Certified Nursing Assistant — the state credential you earn by passing both parts of the NNAAP and being listed on the State Nurse Aide Registry.

competency evaluation

The two-part testing (knowledge + skills) OBRA '87 requires to confirm a nurse aide can give safe care before being added to the registry.

content areas

The nine NNAAP written-test categories (e.g., Basic Nursing Skills, ADLs, Client Rights) that each carry a fixed share of the 60 scored questions per Credentia's content outline.

Credentia

The company that administers the NNAAP and the skills evaluation in NNAAP states; it took over NNAAP administration from Pearson VUE around 2018–2019.

Critical Element Step

A bolded, make-or-break step on an NNAAP skill checklist; missing even one is an automatic failure of that entire skill.

hand hygiene

Handwashing — always the first skill performed on the NNAAP skills evaluation; a 20-second friction lather with the fingertips pointed down.

indirect care

The communication, privacy, dignity, and safety steps (knock/introduce, privacy, call light, bed low) scored inside every skill rather than tested as a separate skill.

measurement skill

A skill that produces a recorded value — blood pressure, radial pulse, respirations, weight, or urinary output; one is always among your five and must be recorded within tolerance.

NATCEP

Nurse Aide Training and Competency Evaluation Program — the state-approved course (federal minimum 75 hours, ≥16 clinical) a candidate must complete to test.

NNAAP

National Nurse Aide Assessment Program — the nurse aide competency exam (written/oral test + skills evaluation) administered by Credentia and used by most U.S. states to certify CNAs.

Nurse Aide Registry

The state list of nurse aides who passed the competency evaluation; a CNA must be on it to work in a Medicare/Medicaid-certified facility.

OBRA '87

The Omnibus Budget Reconciliation Act of 1987 — the federal law requiring nurse aide training, a competency test, and listing on a State Nurse Aide Registry.

oral examination

An alternative to the written test for candidates who read English with difficulty — 60 multiple-choice questions read aloud plus 10 reading-comprehension items.

Pearson VUE

A global testing company; some NNAAP written tests are delivered at Pearson VUE-affiliated centers, and Pearson VUE formerly administered the NNAAP.

Physical Care Skills

The largest NNAAP written category (≈64% of scored questions), covering Basic Nursing Skills, Activities of Daily Living, and Self Care/Independence.

pretest items

10 unscored questions mixed into the 70-question written test that Credentia is evaluating for future exams; they do not count toward your score.

Prometric

A competing testing vendor used for the nurse aide exam in some states instead of Credentia/NNAAP, with its own format and skills list.

recertification

Renewing a CNA certification (typically every 2 years), generally requiring proof of paid work as an aide within the period; rules vary by state.

reciprocity

The process for transferring an active nurse aide certification from one state's registry to another's, subject to the receiving state's rules.

regional test site

A central or in-facility location (school, nursing home, testing center) where the NNAAP skills evaluation and written test are delivered.

scaled cut score

A passing standard set by statistical equating (rather than a fixed raw percent) so different test forms are equally difficult to pass.

skills evaluation

The hands-on half of the NNAAP — five nurse aide skills performed on a live volunteer 'client' within about 30 minutes; you must pass all five.

NNAAP Study Guide FAQ

References

1. 1.Credentia (NNAAP administrator). “NNAAP — Nurse Aide Certification.” credentia.com. ↑
2. 2.Credentia (NNAAP administrator). “The NNAAP Written (or Oral) Examination.” Credentia Knowledge Base. ↑
3. 3.Credentia (NNAAP administrator). “2024 NNAAP Written (Oral) Examination Content Outline (effective April 2024).” Credentia Knowledge Base. ↑
4. 4.Credentia (NNAAP administrator). “NNAAP Exam Fees.” Credentia Knowledge Base. ↑
5. 5.Credentia (NNAAP administrator). “Nurse Aide Candidate Handbook (Skills Evaluation, Critical Element Steps, hand hygiene).” credentia.com. ↑
6. 6.U.S. Centers for Medicare & Medicaid Services (CMS). “42 CFR §483.152 — Requirements for Approval of a Nurse Aide Training and Competency Evaluation Program.” eCFR. ↑
7. 7.U.S. Centers for Medicare & Medicaid Services (CMS). “42 CFR §483.154 — Nurse Aide Competency Evaluation.” eCFR. ↑
8. 8.U.S. Centers for Medicare & Medicaid Services (CMS). “42 CFR §483.156 — Registry of Nurse Aides.” eCFR. ↑
9. 9.U.S. Centers for Medicare & Medicaid Services (CMS). “42 CFR §483.10 — Resident Rights.” eCFR. ↑
10. 10.LibreTexts — Nursing Assistant (Reuter), RN-authored open textbook. “Nursing Assistant (open textbook) — vital signs, skills, scope of practice.” med.libretexts.org. ↑
11. 101.U.S. Centers for Medicare & Medicaid Services (CMS). “42 CFR §483.12 — Freedom from Abuse, Neglect, and Exploitation.” ecfr.gov, accessed 19 June 2026. ↑
12. 102.LibreTexts — Nursing Assistant (Reuter), RN-authored open textbook. “Nursing Assistant (Reuter), 7.5 Normal Ranges for Vital Signs.” med.libretexts.org, accessed 19 June 2026. ↑

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