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You earned an A in Anatomy. An A in Physiology. Maybe even an A in Microbiology.

You worked hard for those grades, and now you’re finally ready to apply to PA school.

But there’s one problem you might not have considered.

Your prerequisite courses might be too old for some of the PA programs on your list.

One of the most frustrating mistakes we see applicants make is spending hundreds or even thousands of dollars applying to PA programs without first confirming that their coursework meets each school’s requirements.

And here’s the part that catches people off guard:

A prerequisite can still count toward your CASPA GPA while no longer qualifying as an acceptable prerequisite at a particular PA school.

Let’s walk through exactly how prerequisite expiration works, how to check your courses, and what to do if you discover that some of your classes are outside a program’s time limit.

1. Why a Class From Years Ago Can Sink Your PA School Application

Imagine this. You graduated from college in 2017.

You earned excellent grades in your science courses, spent several years gaining patient care experience, and now you’re ready to apply to PA school in 2027.

You assume you’re academically qualified because your GPA meets the school’s minimum.

But one of your programs requires science prerequisites to have been completed within the past seven years.

Suddenly, that A in Anatomy from 2017 might not satisfy the requirement.

Even though you passed. Even though you earned an A. Even though you’ve been working in healthcare ever since.

Meeting a school’s minimum GPA does not automatically mean you meet its prerequisite requirements.

PA programs evaluate several different aspects of academic eligibility, including:

• Required prerequisite courses
• Minimum grades in individual courses
• Minimum credit hours and laboratory requirements
• When the courses were completed
• Whether online courses are accepted
• Overall and science CASPA-calculated GPA requirements

An applicant can have an excellent GPA and still be ineligible because one required course doesn’t meet the school’s criteria.

That’s why checking prerequisite expiration dates needs to happen BEFORE you submit your CASPA application.

2. How PA Programs Set Prerequisite Time Limits

Here’s the good news: Not every PA school has prerequisite expiration dates. Each PA program establishes its own admissions requirements.

Some require recent coursework across all prerequisites. Others apply expiration limits only to certain sciences. And some have no expiration requirement at all.

For example: (*schools can change their requirements at any time – this chart is simply an example – double check the program’s requirements on their official website before you submit)

PA program	Published prerequisite policy
Northwestern University	All prerequisites must fall within its seven-year eligibility window
USC	Science prerequisites must be completed within 10 years of the application deadline
Penn State	Seven-year currency requirement for Anatomy, Physiology, and Microbiology, with a healthcare employment waiver
Florida State University	No strict prerequisite expiration date, although more recent coursework is viewed favorably
Tufts University	10-year window, with specified options for older coursework

These are examples of published policies, not a guarantee of requirements for every future application cycle.

Always verify the requirements for the exact cycle in which you plan to apply.

And pay close attention to what date the school uses. A program might calculate its time limit based on:

• The CASPA application deadline
• The date you submit your application
• The year you apply
• The anticipated PA school matriculation date

For example, a course completed in fall 2019 could be acceptable under one program’s seven-year policy but unacceptable under another program’s cutoff date.

Don’t simply subtract seven or ten years from today’s date and assume you have your answer.

3. How to Find a PA School’s Prerequisite Expiration Policy

Before adding a PA program to your final application list, visit the PA program’s official website.

Look for sections labeled:

• Admissions Requirements
• Prerequisite Coursework
• Academic Requirements
• Frequently Asked Questions
• Course Currency
• Prerequisite Recency

Use your browser’s search function (Ctrl+F on Windows or Command+F on Mac) and search for words such as years, expiration, recent, within, or currency.

Then answer these five questions:

Question 1: Does the program have a prerequisite expiration policy?

If yes, determine whether it applies to all prerequisites or only specific courses.

Question 2: What is the exact cutoff date?

A course being seven years old doesn’t automatically mean it’s expired. The school’s specific date calculation determines eligibility.

Question 3: Are there exceptions?

Some programs offer exceptions for applicants with recent advanced science coursework, graduate degrees, or continuous healthcare employment.

Others explicitly prohibit exceptions.

Question 4: Does the program accept substitute coursework?

For example, could recent upper-level Biology satisfy a requirement when introductory Biology is outside the expiration window?

Never assume the answer is yes.

Question 5: Can you apply with a prerequisite still in progress?

Some programs allow outstanding prerequisites. Others require all coursework to be completed before application submission.

If anything is unclear, email the program directly.

Here’s a simple email you can use:

Subject: Prerequisite Coursework Eligibility Question

Dear Admissions Team,

I’m preparing to apply to your PA program for the upcoming application cycle and would appreciate clarification regarding your prerequisite coursework policy.

I completed [Course Name] in [Semester/Year] at [Institution], earning a [Grade].

Would this course satisfy your prerequisite requirement for the upcoming cycle, or would I need to repeat it or complete additional coursework?

Thank you for your time and guidance.

Best regards,
[Your Name]

Insider tip: Save the program’s response.

If an admissions office confirms that a course is acceptable, keep that email with your application planning documents.

4. Your PA School Prerequisite Expiration Tracker

Instead of trying to remember which courses qualify for which programs, create a simple spreadsheet.

Here’s an example:

Course	Completed	Grade	School’s limit	Status
Anatomy	Fall 2017	A	7 years	Check
Physiology	Spring 2018	B+	7 years	Check
Microbiology	Fall 2022	A	7 years	Likely current
General Chemistry I	Fall 2016	B	No limit	Eligible
Statistics	Spring 2021	A	10 years	Likely current

Illustrative entries only. Final eligibility depends on the individual school’s rules and application dates.

Create a separate tab or section for each PA program.

Why? Because your Anatomy course might qualify at School A but not School B. And that difference could completely change your application strategy.

Don’t build your school list based only on GPA and patient care experience. Build it around your actual eligibility.

5. What to Do If a Prerequisite Is Outside the Time Limit

An expired prerequisite doesn’t necessarily mean you need to delay your entire application cycle.

You have several possible options.

Option 1: Retake the course.

If a program requires a recent Anatomy course and yours is too old, retaking Anatomy may be the simplest solution.

Confirm that the new course meets the school’s credit, laboratory, institution, and grade requirements.

Option 2: Ask about approved substitute coursework.

Some programs allow more advanced science coursework to satisfy certain requirements.

For example, Tufts publishes options involving upper-level coursework or repeating introductory courses when prerequisites are outside its ten-year window.

But this flexibility is not universal.

Option 3: See whether an exception applies.

If you’ve worked continuously in healthcare or completed recent graduate-level science coursework, you may qualify for an exception at certain programs.

Penn State, for example, publishes a healthcare employment waiver for its specified seven-year science course currency requirement.

Option 4: Reconsider the program.

Sometimes the smartest strategy isn’t to spend more money retaking multiple courses.

It’s to identify programs where your existing coursework already qualifies. It means applying strategically.

6. Should You Retake an Old Prerequisite or Take an Upper-Level Science Course?

This is one of the most important decisions for applicants returning to school after several years.

And the answer depends on WHY you’re considering additional coursework.

When retaking makes sense

Retaking a course may be your best option when:

• A program explicitly requires a recent version of that prerequisite.
• Your original grade is below the program’s minimum.
• The school doesn’t accept substitute coursework.
• You need to demonstrate stronger mastery of a foundational subject.

When upper-level coursework makes sense

Additional upper-level science courses may be valuable when:

• A program explicitly accepts them as substitutes.
• Your prerequisites are still valid, but you want to demonstrate recent academic ability.
• You’re trying to strengthen a weaker academic history.
• You want to show that you can succeed in rigorous science coursework.

Courses such as Biochemistry, Genetics, Immunology, and Cell Biology may help demonstrate academic readiness.

Important note: An upper-level science course that strengthens your application does not automatically replace an expired prerequisite.

A school might love seeing an A in Immunology while still requiring you to repeat Anatomy.

That’s why you need to know the school’s policy BEFORE registering for classes.

7. How Expired Prerequisites and Repeated Courses Affect Your CASPA GPA

Let’s clear up one of the biggest misconceptions about CASPA.

Retaking a course does not erase your original grade from your CASPA GPA.

CASPA calculates GPAs using the graded coursework reported on your official transcripts, including repeated attempts.

For example:

You took Microbiology in 2018 and earned a C.

You retake Microbiology in 2026 and earn an A.

Both graded attempts generally count toward your CASPA GPA.

Here’s how that works for two four-credit courses:

Attempt	Grade	Credits	Quality points
Original Microbiology	C (2.0)	4	8
Repeated Microbiology	A (4.0)	4	16
Combined		8	24

Your combined GPA for those two attempts is:

24 quality points ÷ 8 attempted credits = 3.0

Not 4.0. And not a replacement of the original C.

CASPA also does not automatically honor an undergraduate institution’s grade forgiveness or academic renewal policy.

This matters because retaking one course might improve your GPA less than you expect. However, a strong retake can still be valuable because it demonstrates improvement and may satisfy a prerequisite requirement.

The goal isn’t simply to raise your GPA. It’s to become eligible AND competitive for the programs you’re targeting.

8. How to Reorder Your PA School List Based on Prerequisite Eligibility

Now let’s put this into an actual application strategy.

Once you’ve reviewed your prerequisite dates, divide your school list into three categories.

Category A: Eligible now

These are programs where:

• Your coursework meets the expiration policies.
• You meet the required grades and credit hours.
• You satisfy the other minimum admissions requirements.

These programs should be your starting point.

But remember, meeting the minimum requirements doesn’t automatically make you competitive.

You still need to compare your GPA, patient care experience, and other qualifications against the program’s accepted student profile when available.

Category B: Eligible with a plan

These programs require something additional, such as:

• One prerequisite retake
• An approved substitute course
• Completion of an outstanding prerequisite
• Written confirmation of an exception

Keep these schools on your list only if you can realistically satisfy their requirements within the appropriate timeline.

Category C: Not eligible this cycle

These programs have requirements you cannot meet before the applicable deadline.

As much as you might love a particular PA program, applying when you’re clearly ineligible is usually not a smart use of your money.

More applications do not automatically equal more acceptance opportunities.

A carefully researched list of programs where you meet the requirements can be more valuable than a longer list filled with eligibility problems. And if you’re applying to rolling admissions programs, resolving these issues early is especially important. You don’t want to discover an expired prerequisite after the application cycle is already underway.

9. A Realistic Example: How One Old Course Can Change an Entire School List

The following is an illustrative composite scenario, not a verified individual student’s case.

Let’s call our applicant Sarah.

Sarah graduated from college in 2017.

She has:

• A 3.45 cumulative GPA
• A 3.38 science GPA
• 3,200 hours of direct patient care experience
• Strong letters of recommendation
• Anatomy and Physiology completed in 2016–2017
• More recent Microbiology and Biochemistry coursework

At first glance, Sarah looks like a potentially competitive applicant at a number of programs. She’s worked hard, has meaningful clinical experience, and meets many common minimum GPA requirements.

She creates a list of 12 PA programs. But when she checks their prerequisite policies, she discovers something important.

Four of the programs require more recent Anatomy and Physiology coursework than she has.

Two additional programs have unclear policies requiring admissions office confirmation.

And six programs appear to accept her existing coursework.

Now Sarah has a decision to make. She could apply to all 12 and hope for the best. She could spend time and money repeating Anatomy and Physiology. Or she could make a more strategic plan.

Here’s what we’d recommend she investigate:

Step 1: Confirm eligibility at the six programs that appear to accept her coursework.

Step 2: Contact the two programs with unclear policies and request written clarification.

Step 3: Determine whether the other four programs offer exceptions or accept substitutes.

Step 4: Compare her GPA and patient care experience with each eligible program’s accepted student averages.

Step 5: Decide whether retaking Anatomy and Physiology would meaningfully expand her realistic school options.

Notice what we’re doing? We’re not telling Sarah to blindly retake courses. We’re not telling her to apply everywhere. We’re helping her make decisions based on actual admissions requirements.

And that is exactly how applicants can avoid wasting time and money.

10. Before You Pay for CASPA, Audit Your Application

Here’s what we want you to remember: You can have a strong GPA, excellent patient care experience, and a compelling personal statement—and still apply to schools where you don’t meet the minimum requirements.

That’s why your school list deserves just as much attention as the rest of your CASPA application.

Before you pay application fees, ask yourself:

• Do all my prerequisite courses meet each program’s time limits?
• Do I meet the required minimum grades?
• Are my labs and credit hours acceptable?
• Do I meet the school’s actual GPA requirements?
• Is my patient care experience considered direct patient care by that program?
• Am I applying to schools where my profile is reasonably competitive?

If you’re not sure where your application stands, sign up for our VIP.

It’s designed to help you not only build your strongest PA school application WITH you on Zoom, but choose the best PA schools for YOU and YOUR stats.

VIP includes private sessions where we meet you on Zoom and:

• -write your entire personal statement
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• -Also includes a mock interview, our PA School Directory, access to Application to Acceptance Course, 6 program supplemental essay edits, and weekly PA shadowing to add to your app

Here’s the link to check it out

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