If you are applying to nursing school, then chances are you have taken not just one, but two vital admission tests: the ATI TEAS and the HESI A2. While both exams test your academic readiness, they differ in format, subject matter, and level of difficulty. Which one is better for your nursing future, and which should you take?

So, let's look at the major differences, compare the levels of difficulty, and help you choose which test is best for your needs.

HESI A2 (Health Education Systems, Inc. Admission Assessment)

It is used by many nursing programs for critical thinking and academic assessment purposes.

Math, reading, grammar, vocabulary, biology, chemistry, anatomy and physiology, and physics (optional) are all covered.

A section focused on learning styles and personality profiles is also provided.

It is often considered to be more demanding and scientific.

ATI administers the ATI TEAS (Test of Essential Academic Skills) to a number of nursing and allied health programs.

Covers science, math, reading, and the use of the English language.

- Anatomy & Physiology, Chemistry, Biology, and Scientific Reasoning make up the Science section of the exam.

Broader in scope with less focus on specific topics.

Feature	HESI A2	ATI TEAS
Subjects Tested	More science-heavy	Broader academic overview
Test Length	~4 hours (varies by school)	~3.5 hours
Difficulty Level	More advanced science questions	Moderate difficulty
Customization	Schools choose which sections	Standardized across programs
Scoring	Each section scored separately	Composite score out of 100
Used For	RN, LPN, and BSN programs	Allied health and nursing

Sources: Lecturio, Edumed, Serrari Group

Which Exam Is More Difficult?

Due to the broader scope of scientific subjects it encompasses, such as chemistry and physics, HESI A2 is often considered more challenging. HESI can be a better option if you're applying to a competitive BSN program and have a strong scientific background.

TEAS has more of a general academic skills emphasis and is therefore more balanced. Students looking to ADN or LPN schools, who want a more rounded style of test would find it suitable.

Choosing the Right Exam for Your Nursing School

Here’s how to decide:

1. Check your school's requirements. Some programs only accept one exam.
2. Think about your strengths. What do you like better: general academics or science?
3. Check your professional goals. Many ADN/LPN programs will accept TEAS, but BSN programs may prefer HESI.

Practice both formats. To determine which test feels most intuitive, use sample questions.

Use the Rhenis Nursing Q-bank to Practice More Effectively

The Rhenis Nursing Q-bank offers targeted practice to boost your confidence and score for both the ATI TEAS and the HESI A2.

Features:

Personalized tests for TEAS and HESI

1. Science-based HESI preparation exercises
2. TEAS reading and grammar practice
3. Adaptive learning tailored to your performance
4. In-depth justifications to fortify critical thinking.

"I won a 92% on the TEAS thanks to Rhenis Nursing! The question formats were perfect. – 2025 Nursing Applicant

Final Tips for Success

1. Give yourself four to six weeks to get ready; start early.
2. Practice taking long tests in order to build stamina.
3. Targeted drills should be used to focus on weak regions.
4. Monitor your progress and make adjustments to the study schedule as needed.

The bottom line

There isn't a one-size-fits-all approach. The ATI TEAS is more appropriate for general academic preparedness, while the HESI A2 is better for competitive and science-focused programs. Choose the test that best suits your strengths and the requirements of your school, and let Rhenis Nursing guide and assist you every step of the way. Ready to get started? Take the first step toward your nursing career by exploring Rhenis Nursing's HESI and TEAS prep resources.

HESI vs TEAS: Which Exam Is Better for Nursing School?

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