You are searching this because you want to know what you are walking into, and most of what you will find elsewhere is either a sales pitch or an unsourced statistic. Here is the honest version: what NAB actually publishes, what it does not, what specifically makes these exams difficult, and which parts of the difficulty your preparation controls.
The NAB exams are serious professional licensure exams, not formalities. NHA licensure requires passing at least two of them: the Core of Knowledge exam (125 questions, 150 minutes) and the NHA Line of Service exam (75 questions, 90 minutes), both computer-based and multiple choice. They span four domains that reach from care planning to wage and hour law to regulatory compliance to governance, which means nearly every candidate meets material far outside their day job. That breadth, more than any single brutal question, is the difficulty.
At the same time, they are exams of applied knowledge, not trick exams. There is no penalty for guessing, the format is predictable, the domain outline is public, and the pacing budget (130 minutes of answering time for 125 CORE questions, about 62 seconds each; 70 minutes for 75 NHA questions, 56 seconds each) can be rehearsed in advance.
Worth being precise about, because the internet is not. As of September 2026, checked against NAB's exam information page and the NAB Candidate Handbook (September 2026 edition):
Four domains: Care, Services & Supports; Operations; Environment & Quality; Leadership & Strategy. Together they cover clinical care standards, finance and reimbursement, human resources law, the physical plant, the survey process, and governance. Almost nobody works in all of these at once, so almost everybody has at least one domain that feels like a foreign language. The full map is in The Core Domains Explained.
Candidates from clinical backgrounds (nurses moving into administration) tend to cruise through Care & Services and struggle with depreciation schedules, financial ratios, and labor law. Candidates from business backgrounds hit the mirror image: comfortable with the P&L, blindsided by clinical vocabulary and care-planning questions. Your professional experience may cover part of the exam; preparation has to cover the rest.
Calculation questions (occupancy rate, FLSA overtime, staffing hours, depreciation, financial ratios) must be produced at exam pace. The methods themselves are learnable; 15 common calculation types are walked through free in 15 NAB Math Calculations, Explained. The hard part is usually not the algebra, it is producing the method cold, mid-exam, at about a minute per question.
Many questions present a situation (a survey finding, a staffing conflict, a family complaint) and ask for the best response, with four options and one correct answer, where more than one option can look reasonable. Working through many scenario questions builds familiarity with this style. You can see the style in our 10 free practice questions with explanations.
Depending on your state, there may also be a state law exam on top of the two NAB exams, covering that state's own regulations. Check your state's full picture, including AIT hours and any state exam, on AIT Hours by State or your state's own page in our state-by-state requirements guide.
Everything above is knowable in advance. The domain outline is public. The question format is stable, four options, no guessing penalty. The pacing math works out to about 62 seconds per question on the CORE and 56 seconds on the NHA, and questions you know well take less, which leaves time for a second pass through the questions you noted. The calculations come from a finite set of formula types. And if you fail, the score report includes a numeric score and diagnostic information, so a failed attempt still hands you a study map. The preparation that fits this exam is the kind you can schedule: steady daily reps across every domain, so nothing goes stale while you drill something else.
Question counts, timing, fees, the passing score, and attempt limits above match the NAB Candidate Handbook (September 2026 edition) and can change between handbook editions. Your NAB Candidate Handbook and your state board are the final word.
It is a serious professional licensure exam: two separate tests, four broad domains spanning clinical care, finance, human resources, regulation, and leadership, plus calculation questions, all at about a minute per question (130 minutes of answering time for the 125 CORE questions, 70 minutes for the 75 NHA questions). Most candidates find some domains familiar from their work and others genuinely foreign, and the foreign ones are what make it feel hard.
NAB does not publish a national pass rate. If a site quotes one, ask for its source. What NAB does publish: scaled scoring from 50 to 150 with 113 designated as passing, and a cap of four attempts per exam cycle effective January 1, 2026. More in NAB Exam Pass Rates and Retakes.
A scaled score of 113 on a 50-to-150 scale. It is not a raw percentage: your raw score converts through statistical equating, so there is no fixed number of correct answers to aim for. Build a margin above the standard in practice instead of aiming to clear it by a point.
Effective January 1, 2026, up to four attempts per exam per examination cycle (July 1 to June 30) for the Core and NHA exams, and your state may allow fewer. The count resets each July 1.
Nobody can promise you a passing score, and this site will not. What can be said: NAB publishes the exams' domains in advance, so the content is mapped. Three habits make preparation harder than it needs to be: studying only your comfortable domains, leaving the math to the final week, and never rehearsing exam pacing. All three are choices you can change.
Try 5 free NAB-style questions with full explanations, no account needed. Then a guided daily path of 100 questions a day across all 4 domains finds your weak spots and drills them.
Try 5 free questions