What You Actually Need to Know About the HESI
The HESI isn't one single exam. It's a family of assessments used by nursing and allied health programs, and the question counts vary depending on which version your school requires. This creates a lot of confusion. People ask the same question repeatedly without realizing that "HESI Exam" could mean something entirely different at two different schools. I've sat through enough of these to know the landscape. Let me break it down plainly.
How Many Questions Are On The Hesi Exam
It depends entirely on which HESI you're taking and which school you're applying to. The two most common versions are the HESI A2 (Admission Assessment) and the HESI Comprehensive Exit Exam. Their structures are very different from each other. The HESI A2 typically contains between 90 and 150 questions total, spread across multiple subtests. The subtests themselves vary by school — not every program requires every section. The usual ones are Reading Comprehension, Vocabulary, Grammar, Math, Anatomy & Physiology, Biology, Chemistry, Biology, and Biology. Each subsection has anywhere from 25 to 45 questions. The full A2, when administered in its entirety, usually takes about 3 to 3.5 hours. Most schools let you skip sections they don't require, which cuts the total down significantly. The HESI Comprehensive Exit Exam is taken near the end of your nursing program, not at admission. It's substantially longer. You're looking at roughly 150 to 200 questions. The time allowance is usually 3 to 4 hours depending on the institution.
Your school's nursing program office will tell you exactly which version you need and the specific breakdown. Don't guess. Call them. I wasted a full month preparing for a practice test that turned out to be the wrong version because I assumed my program used the standard A2. Here's what nobody tells you upfront: some programs use a custom-built HESI rather than the standard one from Elsevier. I ran into this with a candidate who had scored 82% on the standard HESI A2 practice test but was asked to take a customized version through her program's LMS. The question count was lower — about 85 total — but the difficulty curve was steeper, particularly in the math and dosage calculation sections. The practice materials from Elsevier didn't map onto it at all. She had to request the sample questions directly from her program director, which is something the HESI website doesn't advertise clearly.
Get the Full Details
The Reading Comprehension Section
This is the section where most people lose points, and it's not because they can't read. The HESI reading section works differently than the NCLEX reading passages. The passages are shorter but denser. You're often given a passage and then asked questions that require you to infer things the text doesn't explicitly state. I've seen people get 6 out of 10 wrong on practice tests because they were picking answers that felt right rather than answers that were supported by the text. The strategy that actually works is reading the questions first, not the passage. Identify what they're asking for, then go back and hunt for that information. Don't read the whole passage trying to absorb everything. You don't have time for that. This method cut my preparation time from about 40 hours of practice down to maybe 15 hours of focused practice because I stopped treating it like a leisurely reading exercise.
Math and Dosage Calculations
The math portion of the HESI A2 tests basic algebra, fractions, decimals, percentages, and proportions. The dosage calculation section is where people panic, and for good reason. You need to convert between units, calculate IV rates, and work through dimensional analysis problems. The questions are multiple choice, which helps because you can eliminate obviously wrong answers, but the numbers are designed to be fiddly. Memorize your conversion factors. 1 gram equals 1000 milligrams. 1 liter equals 1000 milliliters. These show up in almost every dosage question. If you're spending time figuring out basic conversions during the exam, you're burning seconds that add up to minutes, and the timing pressure makes simple mistakes more likely. One edge case that trips people up: the HESI sometimes includes questions where the answer choices are deliberately close together. A dosage of 5.2 mL might have options like 5.1, 5.2, 5.3, and 5.4. You have to carry your decimals through the entire calculation and round only at the very end. I've seen students round early and land on the wrong answer because 5.17 became 5.2 instead of the correct 5.3 after the full calculation chain.
What the Scores Actually Mean
Different programs set different minimum scores. Some want a 75 or above on the A2. Others require 85 or higher. The comprehensive exit exam often uses a cutoff around 80 to 85 as well, though this varies by school and sometimes by individual subtest. A low score on one section can tank your overall standing even if you ace the rest. The HESI scoring is on a scale of 0 to 100. Unlike the NCLEX which uses a pass/fail model based on ability level, the HESI gives you a percentage score. That sounds straightforward but it matters because your program's threshold is absolute — not relative to other test-takers. Scoring 82% when your school requires 85% is a fail, regardless of how everyone else did.
What You Should Do Next
First, find out exactly which HESI version your program uses. Check the admissions page or call the nursing department. Ask for the question count per section, the time limit, and whether they provide any official practice materials. Some schools share sample questions. Most don't, but it's worth asking. Then get the Elsevier HESI A2 practice tests. The official ones are the closest thing you'll get to the real exam. Take a full practice test under timed conditions before you start studying. This gives you a baseline and reveals which sections need the most work. Don't skip this step. Starting your prep without knowing your baseline means you're guessing about where to focus your time. Use the official HESI study guides alongside the practice tests. The content review in those books is accurate and covers the right material. Third-party resources exist but they often misrepresent the difficulty level or include questions that don't match the actual exam format.
The Downside Nobody Talks About
The HESI has a retake policy that isn't consistent across schools. Some programs let you retake it as many times as you want. Others impose a waiting period — 30 days, 6 months, sometimes a year — between attempts. A few limit the total number of retakes to two or three. This is critical because if you're failing the A2 and your school has a strict retake limit, you need to know that upfront. I worked with a student who bombed her second attempt because her school only allowed two total tries and she hadn't realized there was no third chance until it was too late. She had to defer her application for a full year. Also, the HESI A2 isn't accepted everywhere. Some programs use the TEAS instead, or they've dropped standardized entrance exams entirely. Make sure your target programs actually require the HESI before you invest serious prep time in it. There's no point preparing for an exam your program doesn't use. The HESI is a gatekeeper exam. It's not especially hard if you prepare properly, but it's tedious, and the variability between programs means you can't treat every school the same way. Figure out your specific version, know your target score, and practice under realistic conditions. Everything else is just noise.
