AOA Chapters: Which Medical Schools Have Alpha Omega Alpha and Why It Matters More Than Ever for Competitive Specialties

When I served as Associate Residency Director and sat on the admissions committee at the Icahn School of Medicine at Mount Sinai, few items in a residency application caught a reviewer's eye as quickly as Alpha Omega Alpha. AOA membership tells a program director that a student's own faculty, who watched them work for years, judged them to be among the best in their class. Today that signal matters more than it has in a generation. Step 1 is now pass/fail, and many schools grade preclinical courses and some clerkships pass/fail. Programs therefore have fewer ways to tell strong applicants apart. In the most competitive specialties, AOA has become one of the few remaining markers to distinguish applicants.

In this article I explain what AOA is, how members are chosen, which medical schools offer AOA to their students, and why AOA carries so much weight in the residency match for specialties such as dermatology, orthopaedic surgery, plastic surgery, otolaryngology, and neurosurgery. I also explain what to do if your school has no chapter or you are not elected.

What Is Alpha Omega Alpha?

Alpha Omega Alpha Honor Medical Society, usually written as AΩA or AOA, is the national honor society for allopathic medicine. William W. Root founded it in 1902. Its motto, "Be worthy to serve the suffering," reflects a mission that goes beyond grades and includes scholarship, leadership, professionalism, and service. Students, residents, fellows, faculty, and alumni can all be elected. For medical students applying to residency, however, AOA is most important as a distinction that appears in the residency application and the Medical Student Performance Evaluation (MSPE).

Do not confuse this society with the American Osteopathic Association, which shares the same acronym. AOA chapters can be chartered only at LCME-accredited medical schools, so osteopathic medical students cannot be elected as students; osteopathic schools have their own honor society, Sigma Sigma Phi. Osteopathic physicians can still become members later in their careers. According to AOA, DO residents, fellows, and faculty at institutions affiliated with an AOA chapter are eligible for nomination.

How AOA Members Are Chosen

According to AOA's national guidelines, each chapter may elect up to 20 percent of its graduating class. In practice the number is often smaller, and selection is highly competitive. Each chapter sets its own criteria and weighting. Academic achievement remains central, and chapters are also expected to consider research and scholarship, leadership, professionalism, ethical behavior, and service to the school and community. Nominees must be in good academic standing with no professionalism concerns.

Because chapters design their own processes, the path to AOA differs from school to school. Some schools consider only students in the top quarter or top third of the class by academic performance and then hold a vote among existing members. Others use a more holistic scoring system. AOA requires each chapter to be transparent about its criteria, so your student affairs office or chapter website should explain how your school selects members. I encourage every student considering a competitive specialty to learn those criteria during the first year of medical school, not the third.

Why Timing Matters: Junior AOA and the MSPE

Chapters may elect up to half of their student members in the penultimate year of medical school. Students elected at this stage are often called "junior year AOA," and their membership appears in the residency application and the MSPE in time for programs to see it when they decide whom to interview. Students elected during the final year may be elected after applications have been submitted and interview invitations have gone out, which reduces the effect on their match.

Not every school elects students before the Match. At Columbia, Johns Hopkins, NYU Grossman, Penn, and USF Morsani, for example, students are elected after the Match, so AOA does not appear in their residency applications.

For applicants to competitive specialties this distinction is significant. Junior AOA reflects strong performance during the preclinical years and the early core clerkships, which is why a strong start to medical school matters so much.

Which Medical Schools Offer AOA to Medical Students?

The table below lists, alphabetically, the 131 medical schools that offer AOA membership to their students, including one international chapter at the American University of Beirut. I compiled it from AOA's official chapter directory and from school-reported data, and I excluded schools that keep a chapter for residents and faculty but no longer elect students. Because school policies can change, confirm the current status of any school with its office of student affairs.

Sources: Alpha Omega Alpha Honor Medical Society chapter directory and school-reported data. Confirm the current status of any school with its office of student affairs.

Several well-known schools do not offer AOA to medical students. Harvard Medical School, Yale School of Medicine, Stanford University School of Medicine, Mayo Clinic Alix School of Medicine, and UC San Diego do not have standard student chapters, and UCSF suspended its affiliation with AOA beginning with the class of 2021. Other schools keep a chapter that elects residents and faculty but no longer elect students, includingIcahn Mount Sinai, Case Western Reserve, Duke, Emory, Tufts, UC Davis, UCLA, the University of Connecticut, the University of Pittsburgh, Vanderbilt, and Washington University in St. Louis. Several newer schools, including Hackensack Meridian, Quinnipiac's Netter School of Medicine, TCU Burnett, UC Riverside, and the University of Houston, also do not offer AOA to students. If you attend one of these schools, residency programs know that AOA was not available to you, and you indicate in your application that your school has no chapter.

Why Some Schools Have Stepped Back From AOA

Over the past decade, several schools have reexamined AOA because published research found that white students were more likely to be elected than students from groups underrepresented in medicine, and that students from higher-income backgrounds were also more likely to be elected. My former institution, Icahn Mount Sinai, suspended medical student selection while continuing to elect residents and faculty, and UCSF ended its affiliation in 2020. AOA responded by giving chapters more flexibility to weigh service, leadership, and other qualities beyond test scores and grades.

Whether your school participates in AOA, and how it selects students, is outside your control. Programs evaluate you in the context of your school, and an applicant from a school without a chapter is not penalized for its absence.

Why AOA Carries So Much Weight in Competitive Specialties

The data from the National Resident Matching Program show clearly why AOA matters in the most competitive fields. The 2026 NRMP Charting Outcomes report for U.S. MD seniors shows that 35.1 percent of applicants who matched in dermatology were AOA members, compared with 21.0 percent of those who did not match. In integrated plastic surgery, 35.2 percent of matched applicants were AOA members, compared with 12.2 percent of unmatched applicants. In orthopaedic surgery the figures were 34.9 percent and 14.3 percent, and in neurological surgery they were 23.4 percent and 9.7 percent. Now, it is important to keep in mind that these numbers may not reflect how important AOA is for the schools that have it since many applicants do not have AOA available to them. Otolaryngology had the highest rate of any specialty, with 40 percent of matched applicants holding AOA membership compared with 9 percent of unmatched applicants. A chapter can elect no more than one in five students in a class, and some schools have no chapter at all, so these rates are well above what chance would produce.

Source: NRMP, Charting Outcomes: Characteristics of U.S. MD Seniors Who Matched to Their Preferred Specialty, 2026 Main Residency Match. AOA membership is self-reported by applicants.

The contrast with less competitive fields is telling. Only 6 percent of matched family medicine applicants and 8 percent of matched psychiatry applicants were AOA members. AOA concentrates in the specialties where programs have the most applicants per position and the greatest need to distinguish among them. Therefore, AOA is less important if you are applying for a less competitive specialty.

The NRMP itself notes that these figures probably understate AOA's influence. Some schools have no chapter, and others elect members too late in the year for membership to appear in the application. Applicants who were elected early, in time for programs to see it, are the ones who benefit.

What Program Directors Say About AOA

Program directors confirm what the match data suggest. In the 2026 NRMP Program Director Survey, a large majority of responding program directors in every highly competitive specialty said they consider AOA membership when deciding whom to interview. In integrated plastic surgery, 86 percent cited AOA, the same share that cited grades in required clerkships, grades in the plastic surgery clerkship, and away rotations. In dermatology, 75 percent cited AOA, placing it alongside the MSPE, clerkship grades, and class rank. In orthopaedic surgery, 71 percent cited AOA, and orthopaedic program directors gave it a mean importance rating of 3.8 on a five-point scale, the highest of the five specialties below.

Source: NRMP, Charting Outcomes: Program Director Survey Results, 2026 Main Residency Match, Selecting Applicants to Interview. Percentages reflect responding program directors; response rates within individual specialties were modest, so these figures are best read as directional.

Interview selection is where AOA matters most. A plastic surgery or dermatology program may receive hundreds of applications for a handful of positions, and reviewers use objective distinctions to decide which files get a closer look. When almost every applicant has strong letters and research, AOA is one of the few credentials that separates one file from the next.

I have written about the specific numbers and strategy for several of these fields in my guides to the dermatology residency match and the orthopaedic surgery residency match. If you are weighing a highly competitive field, I also recommend my overview of how to match into a competitive specialty.

Pass/Fail Grading and Why AOA Now Distinguishes Students

For years, Step 1 was the single number that most residency programs used to sort applicants. That changed in January 2022, when the USMLE began reporting Step 1 as pass/fail. At the same time, most schools grade the preclinical curriculum pass/fail, and a growing number have moved some or all clerkships to pass/fail as well. Some schools no longer report class rank.

Program directors still need a way to identify the strongest applicants, so the remaining measures carry more weight. In the 2026 NRMP Program Director Survey, 89 percent of responding program directors said they consider the Step 2 CK score when deciding whom to interview, which makes it the main standardized score in the application. Clerkship honors, letters of recommendation, research productivity, and the narrative comments in the MSPE all receive closer attention as well. AOA occupies a special place among these measures because it reflects your school's overall judgment of your performance across several years. When a transcript shows "pass" in every preclinical course, AOA lets a program know that your faculty placed you among the strongest students in your class.

I expect this trend to continue. As more schools adopt pass/fail grading, the honors that remain, including AOA, clerkship honors, and Gold Humanism Honor Society membership, will continue to grow in importance, particularly in specialties with far more applicants than positions.

How to Position Yourself for AOA

Because junior year AOA reflects performance early in medical school, your preparation should start in your first year. Learn your school's selection criteria and how it weighs academics, research, leadership, and service. Treat your preclinical coursework and internal exams seriously, even when they are graded pass/fail, because many schools still track performance internally and use it for AOA and the MSPE. Aim for honors in your core clerkships, especially in the clerkships most closely related to your intended specialty. Build a sustained record of research and of leadership or service rather than a long list of brief commitments. Above all, maintain an unblemished professionalism record, because any concern can make you ineligible.

What to Do If Your School Has No Chapter or You Are Not Elected

Most students who match into competitive specialties are not AOA members. The 2026 NRMP data show that roughly two thirds of matched dermatology, plastic surgery, and orthopaedic surgery applicants were not AOA members. If AOA is not part of your application, the rest of your application must make the case.

A strong Step 2 CK score is the most important objective measure you control. Strong letters of recommendation from faculty in your specialty, ideally from away rotations and home clerkships, carry great weight; in the 2026 Program Director Survey, every responding dermatology, plastic surgery, and neurological surgery program director cited specialty letters as a factor in interview selection. Use the ERAS program signaling system strategically so that programs know of your genuine interest. Present your research, leadership, and clinical experiences clearly in your ERAS application, and write a personal statement that shows who you are as a future colleague. My guide to residency letters of recommendation explains how to secure the strongest letters possible.

If you would like individualized help assessing your competitiveness and building your strategy for a competitive specialty, our physician advisors can help through our residency match advising.

Frequently Asked Questions About AOA

What percentage of medical students are elected to AOA?

Each AOA chapter may elect up to 20 percent of its graduating class. Many chapters elect fewer, and up to half of a class's student members may be elected during the penultimate year of medical school.

Do all medical schools have AOA chapters?

No. Most MD-granting schools in the United States offer AOA to their students, but some do not, including Harvard, Yale, Stanford, Mayo, UCSF, UCLA, Duke, Emory, Vanderbilt, and Washington University in St. Louis. Some of these schools, such as Icahn Mount Sinai, keep a chapter for residents and faculty but no longer elect students. Osteopathic schools cannot host AOA chapters, so DO students cannot be elected as students, but DO residents, fellows, and faculty at institutions affiliated with a chapter can be nominated.

Is AOA required to match into dermatology or orthopaedic surgery?

No. According to the 2026 NRMP Charting Outcomes report, 35.1 percent of matched dermatology applicants and 34.9 percent of matched orthopaedic surgery applicants were AOA members, compared with 21.0 percent and 14.3 percent of unmatched applicants. Most matched applicants in these fields were not members, but AOA members matched at notably higher rates.

Do residency program directors care about AOA?

Yes, particularly in competitive specialties. In the 2026 NRMP Program Director Survey, 86 percent of responding plastic surgery program directors, 75 percent of dermatology program directors, 71 percent of orthopaedic surgery program directors, and 70 percent of neurological surgery and otolaryngology program directors said they consider AOA membership when deciding whom to interview.

What is junior AOA?

Junior AOA refers to students elected during the penultimate year of medical school. Their membership appears in the residency application and the MSPE before programs make interview decisions, which makes it especially valuable for applicants to competitive specialties.

Will programs penalize me if my school has no AOA chapter?

No. Programs understand that AOA is not available at every school, and you indicate in your application that your school has no chapter. Programs then rely more heavily on Step 2 CK, clerkship performance, letters of recommendation, research, and the MSPE.