The CNA competency exam — formally known as the NNAAP (National Nurse Aide Assessment Program) — is the gateway to becoming a state-certified Nursing Assistant. Administered by Prometric in most states, the exam consists of two parts: a written (or oral) knowledge test and a hands-on skills demonstration. Thousands of candidates take this exam every year, and studies consistently show that those who use structured CNA practice exams pass at significantly higher rates than those who study passively. Our free CNA practice tests mirror the real exam format, covering all NNAAP content areas so you walk into test day confident, prepared, and ready to earn your certification and begin your healthcare career.
The National Nurse Aide Assessment Program (NNAAP) is the standardized competency evaluation used by the majority of U.S. states to certify Nursing Assistants. It was developed by Pearson VUE and is currently administered by Prometric at testing centers nationwide. Passing the NNAAP — or your state's equivalent exam — places you on the state Nurse Aide Registry, which is required before you can work as a CNA in any Medicare- or Medicaid-certified facility.
The exam has two components that must both be passed: a written knowledge test and a clinical skills demonstration. Some states allow candidates to take the two portions on different days, while others require them on the same day. Candidates who fail one portion may retake only that portion, depending on state rules. Most states allow up to three attempts before requiring additional training.
The written portion of the CNA exam consists of 70 multiple-choice questions to be completed in 90 minutes. Questions are drawn from all NNAAP content areas and test both knowledge recall and clinical judgment. The exam is delivered on computer at most Prometric sites, though a paper-and-pencil version and an oral (audio) version are available for candidates with documented reading difficulties.
Each question presents a clinical scenario or a direct knowledge question with four answer choices. There is no penalty for guessing, so you should answer every question. The passing score is typically 70% or higher, though this varies slightly by state. Results are usually available immediately for computerized exams.
The skills portion requires candidates to demonstrate 5 randomly selected clinical skills before a trained evaluator. You must pass all 5 skills to pass this portion of the exam. Each skill is scored on a checklist of critical steps — missing a critical step (such as failing to wash hands) results in an automatic failure of that skill.
Skills are drawn from the full NNAAP skills list, which includes approximately 22 common nursing assistant competencies. Because the 5 tested skills are chosen at random, you must practice all 22 skills to be fully prepared.
The NNAAP written exam covers five major content areas. Basic Nursing Skills make up the largest portion at roughly 50% of questions and include topics such as vital signs, positioning, mobility, nutrition, elimination, and wound care. Physical Care Skills account for about 16% and cover personal hygiene, bathing, grooming, and activities of daily living. Safety and Infection Control represents 14% and is heavily tested — expect questions on standard precautions, isolation procedures, fire safety, and emergency response. Psychosocial Care Skills cover communication, residents' rights, mental health, and spiritual needs at about 10%. Role of the Nurse Aide rounds out the exam with legal and ethical guidelines, documentation basics, and the nursing team structure.
Because the 5 skills tested on exam day are chosen at random from the full NNAAP skills list, you must be fully comfortable with all 22 common skills. Use the checklist below to track your practice:
Practice each skill using the official NNAAP skill checklist so you learn the exact critical steps evaluators will score.
The most effective strategy for passing the CNA written test is consistent practice with exam-style questions combined with targeted textbook review. Start by taking a full-length CNA practice exam to identify your weak areas, then focus your study time on the content categories where you scored lowest. Safety and infection control questions appear frequently and reward candidates who know standard precautions, handwashing technique, and isolation categories cold. Review residents' rights thoroughly — OBRA mandates and dignity-of-care scenarios appear in nearly every exam administration.
Use flashcards for terminology (medical abbreviations, anatomical terms, equipment names) and read through your CNA training textbook chapter by chapter. Many candidates find it helpful to create a study schedule covering one content area per day in the two weeks before the exam. Take at least 3–4 full-length practice exams under timed conditions before test day.
Clinical skills are scored on a strict checklist, so procedure matters as much as outcome. Follow these tips to maximize your score:
While most states use the NNAAP through Prometric, some states — including California, New York, and Texas — administer their own state-specific CNA competency exams. The format is similar (written test plus skills demonstration), but the passing score, number of questions, and approved skills list may differ. Always check with your state's nurse aide registry or department of health for the exact requirements in your state before registering.
Reciprocity rules also vary: if you are already certified in one state and relocating, most states will accept your existing certification via an endorsement process rather than requiring you to retest, provided your certification is active and your registry record is clean.
Earning your CNA certification is the first step in a rewarding healthcare career. Many CNAs go on to become Licensed Practical Nurses (LPNs) or Registered Nurses (RNs) through bridge programs that credit their CNA experience toward clinical hours. Specialized CNA roles — such as restorative aide, medication aide (in states that allow it), or home health aide — also offer increased pay and responsibility. With healthcare employment projected to grow faster than average through 2032, CNAs entering the workforce today have strong long-term career prospects.