HESI A2 vs TEAS 7 compared: sections, science depth, scoring, and which entrance exam is harder. The honest answer depends on one thing, your program.
If your program lets you choose between the HESI A2 and the TEAS 7, or you're applying to schools that use different ones, you want to know which is easier to beat. Here's the honest answer up front: neither is universally harder. They test overlapping skills in different formats, and the "harder" one is whichever is misaligned with how you study and what your school weights. What you actually need is to know the differences so you can pick (or prepare) with intent.
The fundamental difference: fixed vs. modular
The TEAS 7 is a fixed exam, every test-taker gets the same four sections. The HESI A2 is modular: Elsevier offers a menu of sections, and your nursing program decides which ones you sit. That single fact drives most of the practical differences.
| TEAS 7 (ATI) | HESI A2 (Elsevier) | |
|---|---|---|
| Structure | Fixed: 4 sections | Modular: school picks the sections |
| Total questions | 170 | Varies by school's chosen modules |
| Core academics | Reading, Math, Science, English | Math, Reading, Vocabulary, Grammar, + sciences |
| Science depth | One Science section (A&P-heavy) | Can include separate Biology, Chemistry, A&P |
| Scoring | Composite % + proficiency level | Percentage score per section |
| Passing bar | Set by your program | Set by your program |
Where each one stings
The TEAS 7's pressure point is breadth and timing. Four back-to-back timed sections, 209 minutes, and a Science section that leans hard on anatomy and physiology. If reading comprehension under time pressure is your weak spot, the TEAS will feel harder.
The HESI A2's pressure point is science specificity. Because schools often select multiple science modules, Biology, Chemistry, and Anatomy & Physiology as separate sections, a science-heavy HESI can probe deeper into each subject than the single TEAS Science section. If your program stacks the science modules, the HESI can feel more demanding for a non-science background.
The decision is made for you more often than you think
Most programs require one specific exam. Before you agonize over which is 'easier,' confirm which one your target schools actually accept; that usually settles it.
"Which is harder?", the real variables
Difficulty comes down to three things, none of which is the exam's name:
- What your school weights. A HESI with only Math + Reading is lighter than a TEAS; a HESI stacked with three sciences is heavier. Ask the admissions office exactly which modules you'll sit.
- Your background. Strong in A&P? The science-forward HESI may play to your strengths. Stronger reader/test-taker? The standardized TEAS may suit you.
- Your prep alignment. The "harder" exam is the one you prepared for with the wrong materials.
2
things to confirm before you choose: which exam your school requires, and exactly which sections
How to prepare for either
The study approach is the same skill regardless of badge: build real content mastery (especially science), then drill under timed, exam-format conditions so the interface and pacing are familiar.
- For the modular exam, get your section list first, then weight prep accordingly, our HESI A2 prep resources are organized by the sections schools actually assign.
- For the fixed exam, study to the known four-section structure with TEAS 7 practice.
- Either way, treat science as the high-leverage area, it's where both exams separate strong applicants from the pack.
Stop trying to find the "easy" entrance exam. There isn't one. There's the exam your program requires and the prep plan that's aligned to it, get those two right and the question of "which is harder" stops mattering.
