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TEAS vs HESI: Which Nursing Entrance Exam Should You Take?

For the vast majority of prospective nursing students in North America, that challenge boils down to a comparison of two heavyweights: the ATI TEAS and the HESI A2.

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TEAS vs HESI: Which Nursing Entrance Exam Should You Take?

Joining a nursing school can bring a mix of experiences to aspiring medical professionals. Before you can order scrubs, learn clinical assessment skills, or conquer pharmacology, you have to leap over one major hurdle: passing your nursing entrance exam.

For the vast majority of prospective nursing students in North America, that challenge boils down to a comparison of two heavyweights: the ATI TEAS and the HESI A2.

When evaluating the TEAS vs HESI, many applicants mistakenly assume these tests are identical carbon copies. After all, both evaluate math, reading, and science. However, treating the two exams similarly is one of the quickest ways to mismanage your study schedule.

Knowing the main concepts of the TEAS vs HESI will help you tailor your study plan, lower your test anxiety, and secure your place in a top-tier nursing program.

Take our TEAS 7 Practice Test!

What Is the ATI TEAS Exam?

ATI which stands for the Assessment Technologies Institute is the creator of the Test of Essential Academic Skills, popularly known as the TEAS. Now in its seventh iteration (TEAS 7), this test evaluates general academic preparedness across four main subject areas: Reading, Mathematics, Science, and English and Language Usage.

Institutions that prioritize the ATI TEAS usually do so because it acts as a uniform national readiness measurement. The students who take the TEAS test experience similar structure irrespective of their test location. The exam heavily emphasizes critical reasoning and integrated scientific understanding—skills directly tied to success on the NCLEX and in clinical practice.

What Is the HESI A2 Exam?

The Health Education Systems, Inc. Admission Assessment (HESI A2) is published by healthcare educational giant Elsevier. Unlike its counterpart, the HESI A2 is built on a modular design.

While Elsevier offers academic modules covering Anatomy and Physiology, Biology, Chemistry, Physics, Mathematics, Reading Comprehension, Vocabulary, and Grammar, individual nursing programs decide which specific modules you must take. A program focused heavily on basic sciences might require Chemistry and Biology, while another might substitute those for General Physics or focus purely on Vocabulary and Anatomy.

Quick Comparison: TEAS vs HESI at a Glance

Feature

ATI TEAS 7

HESI A2

Testing Vendor

ATI (Assessment Technologies Institute)

Elsevier

Total Questions

170 (150 scored)

Varies by school (typically 100–300+)

Total Time

209 minutes (~3.5 hours)

Varies by school (usually 3–4 hours)

Subject Modules

4 Fixed Modules

Up to 8 Optional Modules

Science Focus

Integrated Human Biology, Chemistry, Scientific Reasoning

Dedicated Anatomy, Biology, Chemistry, & Physics

On-Screen Calculator

Basic 4-function

Basic 4-function

Key Differences in Test Structure and Content

When comparing the content breakdown of the TEAS vs HESI, the nuance lies in how deeply each test digs into specific subjects.

Science: Integrated Reasoning vs. Discrete Concepts

The science section causes the most sleepless nights for pre-nursing students, but the two exams test science in entirely different ways.

The TEAS 7 Science section blends Human Anatomy and Physiology with Life Science, Physical Science, Scientific Reasoning, and basic Chemistry into one fast-paced section. You might read a question about pulmonary circulation and immediately follow it with a question requiring you to analyze an experimental control group.

The HESI A2 breaks science down into discrete, individual subjects. If your target school requires HESI Anatomy and Physiology, you will answer questions exclusively on that body system without mixed-in chemistry concepts. Many students find the HESI Science sub-tests more straightforward to study for because you can review subjects in isolated blocks.

Mathematics: Practical Applications vs. Pure Fundamentals

These two tests evaluate competencies in; basic arithmetic, algebra, fractions, decimals, and data interpretation. Although they tend to test similar areas, the TEAS frame its math problems around actual problems and real-world clinical applications, forcing you to figure out what the question is asking before you do the calculation. The HESI math section focuses more on direct items, direct calculations and foundational skill evaluations.

Reading and Language: Critical Analysis vs. Vocabulary Depth

Reading comprehension in the TEAS vs HESI: the TEAS exam tilts more towards analysis of passages, recognizing author’s intent, evaluating the strength of arguments and primary sources identification.

The HESI on the other hand places more emphasis on health-related medical vocabulary, word roots, prefixes, and sentence structure. If you have a strong grasp of Latin roots and health terminology, the HESI vocabulary module can feel like a major scoring boost.

Scoring Systems and Retake Policies

Navigating retake policies requires careful attention when weighing the TEAS vs HESI.

The analysis of the TEAS grades is based on an overall adjusted percentage while providing sub-scores for each of the four main sections. Most nursing colleges set a baseline cutoff—often around 65% to 75%—for eligibility, though in most schools, competitive entry requires scores of 80% or higher.

The HESI A2 scores each individual module on a scale from 20% to 100%. Schools often set minimum requirements per module rather than looking solely at a composite score.

Retake policies vary widely:

  • ATI allows students to retake the TEAS, but many nursing programs cap the number of attempts per year or require a 30-day waiting period between attempts.

  • The retake rules for HESI are solely governed by individual nursing schools. Some schools allow students to retake the failed modules while others require redoing the entire exam.

    Univeristy of Arizona HESI A2 College Assessment is here.

TEAS vs HESI: Which One Is Harder?

One of the determinant factor of which exam is difficult between TEAS vs HESI depends on your academic prowess.

  • The TEAS is often considered harder by students who struggle with time management, integrated science questions, or wordy critical-thinking prompts. The time pressure per question is generally tighter on the TEAS.

  • The HESI is often considered harder for students who struggle with straightforward memorization across multiple specific subjects, or who freeze up when faced with direct vocabulary and grammar rules.

Neither exam is inherently "easier"; they simply demand different testing strategies.

How to Prepare for Your Chosen Entrance Exam

Before you purchase or enroll for prep courses, consider the following steps:

  1. Check your schools requirements: Don’t guess which exam your school accepts. Open the school’s official page or consult the admissions office and confirm whether they accept the TEAS or the HESI A2

  2. Identify which HESI modules: If the school accepts HESI, request for the exact content of required sub-sets to avoid wasting time reading unwanted modules.

  3. Take a Diagnostic Practice Test: Take a full-length practice exam under timed conditions early in your prep.

  4. Focus on Active Recall: Avoid passively highlighting textbooks. Use flashcards for HESI vocabulary and Anatomy, and solve practice word problems for TEAS math and reading logic.

Final Thoughts for TEAS vs HESI

When considering the two tests; TEAS vs HESI, none should stand along the way. The two tests have been created to achieve the same goal: ensuring you possess the competencies required in math, reading, and science to thrive in the demands of the nursing curriculum.

The important things to consider is which exam your programs require; then align the preparation strategies with its design structure and approach it with confidence.

Try out the best TEAS 7 Practice Test.


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