As can be the case with medical practice, admitting the right students to medical school is an inexact science.

Scoring highly on the Medical College Admissions Test (MCAT)—one of the primary measurements used in consideration of medical student admission by medical schools—doesn’t mean you’ll become a great, or even a good, doctor. But it does generally portend success on the licensing exams—the United States Medical Licensing Examination (USMLE) Step 1 and Step 2 exams—that one takes as a medical student.

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Take a deeper dive on the data that predicts how a prospective medical student will perform in their undergraduate medical training.

The average MCAT score for students who matriculated to medical school in 2018–2019, according to the Association of American Medical Colleges, was 511.2. Based on recent data, if you scored in the average range, your chances of advancing from your first year of medical school to your second year were extremely high—98 percent of students scoring between 510–513 did so. The numbers only dipped slightly, however, for those who scored 10 points lower, with students who entered medical school with MCAT scores between 498–501 progressing to year two at a 94 percent rate.

The AAMC also studied undergraduate grade-point average (GPA) as a predictor of medical school success. In partnering with 18 medical schools that measured performance of about 1,000 total students, the study, “Using MCAT Data in 2019 Medical Student Selection,” determined that GPA was a slightly less impactful predictor of medical student success than MCAT scores. A more effective indicator of how well a first-year student would fare was to look at both MCAT scores and undergraduate grades.

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It’s also worth noting that the MCAT’s impact may have a shelf life.

A study published in Military Medicine indicated that by the time medical students became residents, their MCAT score was far less of a predictor of success than it was early in medical school. Researchers behind the April 2015 study, “Does the MCAT Predict Medical School and PGY-1 Performance?” found that the “MCAT was not able to predict assessments relying on direct clinical observation, nor was it able to predict” program director assessment of performance during residency’s first year.

An MCAT score assesses intellectual knowledge. That matters: In medical school, the knowledge comes at a furious pace. Still, it is unlikely that any standardized test can ever fully measure competencies beyond medical knowledge that the successful physician possesses, such as empathy, communication skills and teamwork.

Overreliance on just one measure of performance, such as the MCAT, risks missing a pool of candidates with other valuable attributes to contribute to the health care system. The MCAT itself was redesigned in 2015 to include sections that required test-takers to have an understanding of the social and behavioral sciences.

Tonya Fancher, MD, MPH, is the associate dean for workforce innovation and community engagement at the University of California, Davis, School of Medicine (UC Davis). The medical school is one of the 37 members of the AMA Accelerating Change in Medical Education Consortium that is working together to create the medical schools of the future and transform physician training.

“We value the experiences that students bring to medical school,” Dr. Fancher said. “While we want students to be smart and adaptable, we also value their diverse backgrounds, which can enrich our learning environment and improves our ability to care for all patients.”

The aforementioned AAMC study included a list of the most important factors admissions offices considered when looking at potential medical students. While MCAT scores and grade-point averages were listed among the categories of criteria given highest weight, as schools strive to understand the broader competencies that a candidate brings to the table, they report also considering a number of less tangible factors such as leadership and interview results, community service and volunteer work both within and outside of medicine.

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