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Most PA schools require an entrance exam as part of their admission requirements. The standard entrance exam for PA school is the GRE, but many schools are switching to the PA-CAT and CASPer exams. Below, we outline the differences, along with everything else you need to know about these entrance exams!

GRE

What is the GRE?

The GRE is a multiple-choice, computer-based, standardized exam

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What is on the GRE? 

  • Analytical Writing (1 essay)

  • Verbal Reasoning (2 sections)

  • Quantitative Reasoning (2 sections)

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How is it scored? 

  • The Quantitative Reasoning and Verbal Reasoning sections are each scored on a scale of 130 to 170.

  • The Analytical Writing Assessment is scored from 0 to 6 in half-point increments.

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Breakdown of Analytical Writing

  • 1 essay; 30 minutes 

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Breakdown of Verbal Reasoning

  • Section 1: 12 questions (18 minutes)

  • Section 2: 15 questions (23 minutes)

  • Topics: reading comprehension, text completion, sentence equivalence 

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Breakdown of Quantitative Reasoning

  • Section 1: 12 questions (21 minutes)

  • Section 2: 15 questions (26 minutes)

  • Topics: algebra, arithmetic, geometry, data analysis 

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​Total Test Time:

  • About 1 hour and 58 minutes

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How often can you take the GRE?

You can take the computer-delivered GRE once every 21 days, up to five times within any continuous rolling 12-month period (365 days).

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How much does it cost?

The cost to take the GRE is about $220

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Website for more information: Kaplan GRE

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PA-CAT

What is the PA-CAT? 

The Physician Assistant College Admission Test (PA-CAT) is a specialized test that is designed to measure applicant knowledge and application in key prerequisite science subjects typically required for PA school.

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How is it scored? 

  • Scaled Score: 200-800

  • Includes:

    • Composite Score ​

    • Subscores (Anatomy & Physiology, Biology, Chemistry)

  • Scores are compared to other applicants using percentile rankings. 

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What is on the PA-CAT? 

240-item assessment covering 9 science subject areas:​​

  • Anatomy - 16%

    • approx 39 questions

  • Physiology - 16%

    • approx 39 questions

  • General Biology - 11%

    • approx 26 questions 

  • Biochemistry - 5%

    • approx 12 questions

  • General and Organic Chemistry - 16%

    • approx 38 questions

  • Microbiology - 11%

    • approx 26 questions

  • Behavioral Sciences - 9%

    • approx 22 questions

  • Genetics - 11%

    • approx 26 questions

  • Statistics - 5%

    • approx 12 questions 

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Total Test Time:

  • About 4.5 hours total 

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How often can you take it?

  • Every 6 weeks 

  • Up to 3 times per year 

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How much does it cost?  

The cost to take the PA-CAT is about $257

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Website for more information: 

PA-CT

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CASPER

What is the CASPer exam?

CASPer is an online situational judgment test that evaluates personal and professional characteristics such as ethics, communication, and decision-making.

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What is on the GRE? 

  • 14 scenarios total 

  • Mix of:

    • Video responses ​

    • Typed responses 

  • Focuses on real-world situations and ethical decision-making

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How is it scored? 

  • Quartile ranking (1st-4th quartile)​​

  • No numeric score 

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Breakdown of Test:

  • Section 1: Video responses (2 scenarios)

  • Section 2: Type responses (12 scenarios, 3 questions each)​​

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​Total Test Time:

  • About 60-90 minutes 

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How often can you take the GRE?

Once per application cycle. 

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How much does it cost?

The cost to take the CASPer is about $85

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Website for more information: 

Acuity Insights (CASPer)

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© 2026 by Pre-Physician Assistant Society.

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