M1 refers to the first year of medical school. The “M” stands for “medical” and the “1” stands for first year, so M1 simply means “first-year medical student” or the first-year experience itself. The same naming pattern continues through all four years: M2, M3, and M4. Along with M2, the M1 year falls into what’s called the “preclinical” or “preclerkship” phase, where the focus is on building a foundation in the sciences before students rotate through hospitals and clinics in their third and fourth years.
What M1 Students Actually Study
The M1 curriculum is built around learning how the human body works at every level, from molecules to organ systems. At most schools, the year is divided into multi-week blocks, each centered on a topic or body system. At the University of Missouri, for example, M1 and M2 each consist of four nine-week blocks. The University of California, San Francisco organizes its first-year blocks around groupings like airways, blood, and circulation (cardiovascular and pulmonary systems), then renal, endocrine, gastrointestinal, and nutrition, then pathogens and host defense (immunology, microbiology, infectious disease).
Across schools, the core subjects that fill the M1 year generally include anatomy (with cadaver dissection labs), physiology, biochemistry, pharmacology, genetics, and pathology. Many programs also weave in clinical epidemiology, preventive medicine, and early training in patient communication and “doctoring” skills. The specifics vary by school, but the goal is the same: give students the scientific vocabulary and understanding they’ll need before they start diagnosing and treating patients in later years.
How Clinical Exposure Fits In
Even though M1 is classified as preclinical, most programs now include some patient contact during the first year. At the University of Michigan, for instance, students begin spending time in hospitals and clinics during the fall of M1, with experiences in emergency medicine, pediatrics, surgery observation, and team-based care settings. These early clinical exposures are limited compared to what M3 and M4 students do, but they give first-year students a chance to connect classroom science to real patients. Later in the year, many students observe interdisciplinary team rounds to see how doctors, nurses, and other professionals work together.
A Typical M1 Week
Daily life in M1 revolves around lectures, anatomy lab, small-group problem-based learning sessions, and a significant amount of independent study. Based on schedules shared by students at the University of Missouri, a common pattern looks something like this: mornings are spent in lecture or anatomy lab (roughly 8 a.m. to noon), afternoons are for reviewing material, making flashcards, and working through practice questions, and evenings involve another round of catch-up study from about 7 to 10 p.m.
Most students study on weekends too, though the intensity varies. Some dedicate Saturday mornings and early afternoons to focused review and keep Sunday lighter for errands, cooking, and rest. Non-traditional students with families follow a similar academic schedule but structure their evenings differently. A recurring theme across M1 schedules is the heavy use of spaced-repetition flashcard apps (Anki is the most popular), third-party video resources, and practice questions layered on top of whatever the school provides.
Not every lecture is mandatory, and many schools record them for later viewing. This gives students flexibility to study at their own pace during the day, though anatomy labs and small-group sessions typically require in-person attendance.
Grading and Exam Pressure
More than 80% of U.S. MD-granting medical schools now use pass/fail grading for preclerkship courses, according to data published in JAMA. This means most M1 students aren’t competing against classmates for letter grades. The shift is designed to reduce stress and encourage collaborative learning during the foundational years.
That said, pass/fail doesn’t mean low stakes. The material covered in M1 and M2 forms the basis for USMLE Step 1, a national licensing exam that all medical students must pass. Step 1 transitioned to pass/fail scoring in January 2022, removing the three-digit score that previously played a major role in residency applications. Since that change, the Step 1 pass rate among U.S. MD students dropped from 95% in 2021 to 91% in 2022, and slipped further to 90% in 2023. The decline suggests that some students study less intensely for Step 1 now that it no longer produces a competitive numerical score. Many schools have responded by building Step 1-style practice questions directly into the M1 and M2 curriculum to keep students engaged with the material.
The White Coat Ceremony
One of the most recognizable milestones of M1 is the White Coat Ceremony, which typically takes place during orientation, just before classes begin. Students receive their first white coat from a faculty member, symbolizing their entry into the medical profession. At the University of Minnesota, for example, the ceremony for the Class of 2029 is scheduled for August 2025. It’s a brief, largely symbolic event, but for many students and their families, it marks the emotional start of their medical training.
How M1 Differs From M2
M1 and M2 are both preclinical years, but they serve different purposes. M1 focuses on normal structure and function: how healthy organs, tissues, and systems work. M2 shifts toward what goes wrong, covering disease processes, clinical diagnosis, and treatment in greater depth. By the end of M2, students are expected to be ready for clinical clerkships, the hands-on hospital rotations that define M3. About half of medical schools begin core clerkships in the third year, meaning the transition from classroom to clinic happens right after M2 for most students.
The exam pressure also builds. Even though Step 1 is now pass/fail, most students take it near the end of M2 or during the summer between M2 and M3, so second-year studying tends to be more intense and more focused on board-style preparation.
The Summer After M1
The summer between M1 and M2 is often the last extended break medical students get before residency. Many students use it for research projects, which provide exposure to potential career paths and help build a CV for residency applications. Others pursue clinical externships or summer fellowships, some of which are paid. Volunteer work, international health experiences, and simply resting are also common. Schools often sponsor structured elective opportunities, but how students spend this time is largely up to them.