CNA Exam Study Guide: How to Prepare for the Written Exam and the Skills Evaluation

Two parts of the CNA exam, two kinds of practice

The CNA (nurse aide) competency exam has two parts, and you prepare for them in different ways. Federal rules require every state's evaluation to include a written or oral exam and a demonstration of skills, and you must pass both (42 CFR 483.154(e)(1)). The written (knowledge) exam is studied like any test: learn the material, answer questions, fix the weak spots. The skills evaluation is studied with your hands, on real equipment, in front of someone who knows the checklist.

This guide uses the NNAAP exam as its example. NNAAP is the National Nurse Aide Assessment Program, used in states that contract with Credentia. NCSBN, which first developed it, now says it "no longer develops and owns the content" and sends candidates to Credentia. Not every state uses the NNAAP, so first check which CNA exam your state uses. The method below still works if your state's exam differs. Swap in your state's outline and skills list.

Track 1: the CNA written exam, studied by content area

On the NNAAP written exam you answer 70 multiple-choice questions in two hours. Ten of them are unscored pretest items, so 60 count (Credentia's Pennsylvania handbook, as checked on October 18, 2026). The 2024 NNAAP outline spreads those 60 scored items over nine content areas, and two areas hold more than half of them:

What's on the CNA written exam turns each area into the decision its questions usually ask you to make.

A six-week template built from the item counts

The official sources checked for this guide publish no recommended study time, and your training program's length usually sets the pace. If you have about six weeks between finishing class and your exam date, this template gives each area time roughly in proportion to its scored items. It is a Passy suggestion, not an official schedule. If you would rather have the areas placed on a calendar from your exam date, the CNA study plan builder does that.

Less time? Merge weeks 4 and 5, but keep two weeks on Basic Nursing Skills. More time? Repeat weeks 1 to 3 before week 6. The outline does not say how the 21 Basic Nursing Skills items divide among its four topics, so give each topic a fair share.

Inside each week, use the same three moves. Read the material. Say each principle out loud in one sentence, with its reason ("soap and water when hands are visibly soiled, because that is the case CDC names for washing"). Then answer questions on it. At the end of the week, try a round of CNA written-exam questions with explanations and note the content area of each question you got wrong.

Track 2: the CNA skills evaluation, rehearsed with your hands

The NNAAP skills evaluation gives you five skills and 30 minutes. Hand Hygiene is always one of them. The other four are chosen at random, and one of those four includes a measurement, such as a pulse or a blood pressure. You must pass all five (Credentia's Pennsylvania and Tennessee handbooks, as checked on October 18, 2026). The NNAAP list has 23 skills, each with its own checklist of steps. Some steps are Critical Element Steps: leave one out or do it wrong, and you fail that skill even if everything else went well.

Reading about a transfer does not train your hands, and no multiple-choice question can show whether your gloves came off at the right moment. Plan the skills track as rehearsal:

• Get your state's current checklist. Use the version in your state's handbook or the one your instructor gives you. Lists change, and states leave some skills out. The 23 NNAAP skills explained shows which skills Pennsylvania and Tennessee do not test, and what Tennessee changes on November 1 and December 1, 2026.
• Rehearse every skill your state tests. The four random skills can be any of them, so a skill you skipped in practice can be on your card.
• Practice with a partner playing the resident. On test day another candidate plays a weakened elderly resident, and you talk to that person as you would at work.
• Have someone watch you with the checklist in hand. Your instructor or a classmate can catch a skipped step you would never notice yourself.
• Measure on real equipment and write the number down at once. The measurement skill is scored on the number you record, so practice reading and recording, not just counting.
• Rehearse against the clock. Thirty minutes for five skills averages six minutes each, and hand washing takes part of that time.

How the skills evaluation works covers the candidate volunteer, corrections and scoring.

How to read a CNA skills checklist for its reasons

A checklist looks like a long list to memorize. It is easier to learn if you ask, for every step, what it protects. Most steps serve one of five purposes:

When you rehearse, name the purpose as you do the step: "curtain, for privacy." A step you can explain is harder to skip when you are nervous, and the purpose is the part that carries over to real care.

A review loop for wrong answers on CNA practice questions

Practice questions help only if each wrong answer changes what you study next. A simple loop:

1. Sort. Mark each miss with its content area.
2. Name the principle. Write one sentence for the rule the question tested, in your own words.
3. Find the trap. Note why the option you picked was tempting: it was faster, it left out the nurse, or it overrode the resident's choice.
4. Come back later. Return to that area a few days later, not right away, and check that the principle stuck.

The real exam works on a similar idea. A candidate who does not pass must be told which areas he or she did not pass, and that he or she has at least three opportunities to take the evaluation (42 CFR 483.154(f)). Your state sets the exact limit. Your own log does the same job before exam day.

Once you have logged a few rounds, check which CNA content areas your wrong answers cluster in and move those areas to the front of the next week.

Why lists of "real CNA test questions" are a risk

You may come across files that claim to hold actual CNA exam questions. Federal rules require the written exam to come from a pool of questions, with only part of the pool used on any one exam, and require a system that prevents disclosure of the pool and of individual evaluations (42 CFR 483.154(b)(1)). Credentia's Pennsylvania handbook adds that all exam questions and forms are Credentia's copyrighted property and that distributing exam content "is strictly prohibited and punishable by law."

There is a study reason too. The exam asks what a safe nurse aide does in a situation, and a remembered answer without its reason fails the next situation that looks a little different. Original questions with explanations, such as Passy's CNA practice questions, are useful because they make you say why the right answer is safer. If you want to know where the difficulty usually comes from, how hard the CNA exam is breaks it down.

Credentia's official CNA practice exam

Credentia sells its own practice. As checked on October 18, 2026, its Practice Exams page offered a "Nurse Aide Certification Practice Exam" in bundles. Bundle I costs $30 for a single proctored practice exam of 40 questions, and Bundle II costs $50 for two 40-question exams. Credentia also sells skills simulations priced per skill, with one attempt included and 60 days of access. The same page says the practice exam is not mandatory and does not count toward or against any attempt on your real exam. Prices and contents can change, so check the page before you buy. This guide does not rate the product.