PA school as a career changer
Yes, people start PA school after other careers, but most new PA students are in their early to mid-20s. In PAEA's CASPA data for 2024–25, 16.3% of new PA students were 26 or older and 4.8% were 31 or older; the oldest was 68. PA programs generally don't require a particular major (Yale, for example, says a science major isn't required), so the usual work for a career changer is finishing prerequisites, checking whether older courses still count, and building patient care hours.
What the data show
| Measure | Number | Source |
|---|---|---|
| New PA students aged 26 or older, 2024–25 | 16.3% (2,151 of 13,195) | PAEA CASPA Matriculant Report |
| New PA students aged 31 or older, 2024–25 | 4.8% | PAEA CASPA Matriculant Report |
| Decided to become a PA after earning a bachelor's degree | 18.2% | PAEA Student Report 6 (2022) |
| Decided after completing non-PA graduate training or a graduate degree | 4.1% | PAEA Student Report 6 (2022) |
| Veterans among new PA students, 2024–25 | 1.6% (214) | PAEA CASPA Matriculant Report |
The four things to plan
- Prerequisites. You don't need a science degree, but you need each program's courses (see PA school prerequisites). Some programs, like Yale, let you take them at community colleges or schools you didn't graduate from; others limit that. Colorado, for example, won't count community college courses toward its upper-division biology requirement.
- Time limits on old courses. Science classes from years ago may not count, and some limits cover every prerequisite, not just a few. Commonwealth University requires anatomy, physiology and microbiology within five years of starting the program, and St. John's limits all prerequisites to ten years before you submit CASPA. Yale, by contrast, says its prerequisites don't expire. See do prerequisites expire?
- Patient care hours. Most programs want hands-on experience: in PAEA's review of 273 program websites (2021–22), 67.4% required direct patient care and 20.9% preferred it. Students who started PA school in 2022 reported a median of 3,200 hours of direct patient contact, about a year and a half of full-time work, so plan for this to take time. Your earlier career may not count. See your first patient care job and gap years before PA school.
- Recent grades. Some programs weigh your recent work. Kansas State, for example, requires at least a 3.0 GPA on your last 60 credit hours (and uses your graduate GPA instead if you have a graduate degree). A few post-bacc courses may not fill all 60 hours, so older grades can still count. Commonwealth says it values applicants who have excelled in health-science-related post-baccalaureate coursework.
Post-baccalaureate programs
Some universities run structured post-bacc programs for prerequisites, and a few have links with PA programs. George Washington University, for example, offers a guaranteed interview to up to two students from its own post-bacc pre-PA track who meet its conditions (including a 3.5 GPA, prerequisites completed within 10 years, and 1,000 hours of direct patient care when you apply). A post-bacc isn't required; you can also take courses one at a time, as long as each program accepts where you took them.
Your past career can still help
Programs read your whole application. Leadership, communication and life experience from another career can strengthen your personal statement and interviews (see the CASPA personal statement), even if the hours don't count as patient care.
Related guides
Free: the Patient Care Hours Starter Kit. A 3-step check for whether a job counts at your schools, CASPA's categories on one page, and a simple hours log. Built from the same program pages as this guide.
Get the free kit →Quick answers
Can you go to PA school as a career changer?
Yes. In PAEA's CASPA data for 2024–25, 16.3% of new PA students were 26 or older and 4.8% were 31 or older. PA programs generally don't require a particular major. Career changers usually need to finish prerequisites, retake science courses that are too old for their programs, and build patient care hours.
Is 30 too old for PA school?
No. In PAEA's 2024–25 CASPA data, 4.8% of new PA students were 31 or older, and the oldest was 68. Check whether your older science courses still count, since some programs set time limits.
Do I need a post-bacc program for PA school?
No. A structured post-bacc program is one way to take prerequisites, and a few have links with PA programs, but you can also take courses individually if each program accepts where, and how recently, you took them.
Sources (all opened October 2026)
- PAEA: CASPA Matriculant Report, 2020–21 to 2024–25 (Excel): https://paeaonline.org/wp-content/uploads/2026/03/CASPA-Matriculation-Data-2020-25-Final.xlsx
- PAEA Student Report 6 (2022 Matriculating Student and End of Program Surveys): https://paeaonline.org/wp-content/uploads/2025/01/FINAL_student-report-6-2025-01-13.pdf
- PAEA Curriculum Report 6: prerequisites and admissions (program websites reviewed Oct 2021–Feb 2022): https://e1.nmcdn.io/assets/paea/wp-content/uploads/2023/02/PAEA-curriculum-2021-prerequisites-1.pdf
- Yale Physician Associate Program: Prerequisites, experience and skills: https://medicine.yale.edu/pa/admissions/prerequisites-experience-skill/
- Commonwealth University PA Program: Admission criteria: https://www.commonwealthu.edu/academics/programs/physician-associate-mhs/admission-criteria
- St. John's University PA Program: Admissions FAQs (July 2026): https://www.stjohns.edu/sites/default/files/2026-07/Admissions%20FAQs.pdf
- Kansas State University PA Program: Admission: https://www.hhs.k-state.edu/health-sciences/academics/graduate/physician-assistant/admission/
- Kansas State University PA Program: admission requirements (JCCC transfer guide, 2026–27): https://catalog.jccc.edu/transfer-guides/k-state/k-state-physician-asst/
- George Washington University PA Program: Linkage programs: https://physicianassistant.smhs.gwu.edu/linkage-programs
- CU Anschutz PA Program: Prerequisites: https://medschool.cuanschutz.edu/physician-assistant-program/prospective-students/prerequisites