When Do Medical Students Take Step 1?

Most medical students in the United States take USMLE Step 1 at the end of their second year of medical school, after completing the preclinical (classroom-based) curriculum and before starting clinical rotations in hospitals and clinics. That has been the standard timeline for decades, but it is no longer universal. A growing number of schools now place Step 1 after core clerkships, and the 2022 shift to pass/fail scoring has reshaped how students approach the exam’s timing and preparation.

The Traditional Timeline

In the conventional four-year medical school structure, the first two years focus on foundational sciences like anatomy, physiology, pharmacology, and pathology. Step 1 is typically taken at the end of that second year, followed by Step 2 Clinical Knowledge (CK) at the end of the third year or at some point during the fourth year.¹ The logic is straightforward: students spend two years learning basic science, take the exam that tests basic science, and then move into clinical training.

Before the exam itself, nearly every school builds in a “dedicated preparation period,” sometimes called “dedicated study time” or simply “dedicated.” This is typically a block of four to eight weeks of protected time when students have no other coursework or clinical obligations and focus entirely on reviewing for Step 1.² During this window, students typically use question banks, review resources, and practice exams to consolidate two years of material. Schools vary in how much structure they impose on this period, but the existence of dedicated time before the test is standard practice.

Schools That Moved Step 1 After Clerkships

Not every school follows that second-year timeline. Many programs have restructured their curricula over the past decade, often compressing the preclinical phase to 18 months or less and introducing students to clinical environments earlier. That compression naturally raised the question of when Step 1 should fall. A number of schools shifted the exam to the period immediately after core clerkships, meaning students take it in their third year or even early in their fourth.³ Over 20 schools had adopted this post-clerkship model by the early 2020s.⁴

The results from schools that made this switch have been reassuring on the Step 1 side. One study found that after moving the exam to follow clerkships, Step 1 scores were slightly higher and failure rates dropped substantially, from about 2.9% to 0.4%.⁵ Those score gains were small in absolute terms and unlikely to represent meaningful knowledge differences, but they demonstrated that the change at least did not hurt students. Separate research found that moving Step 1 later had no significant impact on Step 2 CK scores or failure rates either, and students with lower entering academic credentials appeared to benefit most from the delayed timing.⁶

The post-clerkship model is not without trade-offs, though. Some schools that delayed Step 1 reported declines in performance on clinical subject exams taken during clerkships. Possible explanations include the shorter preclinical curriculum, the loss of the Step 1 study period as a knowledge consolidation phase, and less prior exposure to the style of exam questions used on those clinical assessments.⁷ In other words, the intense Step 1 prep period apparently helped students perform better on other exams too, and removing it from the pre-clerkship sequence had a ripple effect.

How Schools Decide You Are Ready

Your school does not just hand you an exam date and wish you luck. Most programs have some form of readiness assessment to gauge whether you are likely to pass before you sit for the real thing. The most widely used tool is the NBME Comprehensive Basic Science Examination (CBSE), a practice exam purchased directly from the National Board of Medical Examiners that mirrors Step 1 content.⁸ Research has shown that this practice exam gives students a realistic sense of how they will perform on the actual Step 1.⁹

In a survey of medical schools, about 78% of responding institutions used the CBSE to identify students performing below expectations and to provide targeted support. Roughly 23% of schools went further, requiring students to hit a minimum CBSE score before they were allowed to attempt Step 1 at all.¹⁰ If you fall below the threshold, your school may require additional study time or remediation before clearing you to register. This is especially relevant at schools that moved Step 1 after clerkships, where late identification of a struggling student can be particularly problematic because there is less time remaining in the curriculum to remediate, and the student has already accumulated more debt.¹¹

What Happens When You Delay

Even at schools with a fixed exam window, not every student takes Step 1 on the expected schedule. Academic struggles, personal circumstances, health issues, or simply not hitting the readiness benchmarks can push a student’s exam date back by months or longer. The data on what happens to those students is sobering. A retrospective study at one medical school found that 27% of students delayed Step 1 beyond the standard timeframe, and those students scored significantly lower on average than their peers who tested on time. The delayers also scored lower on Step 2 CK later in their training.¹²

That correlation likely reflects multiple factors running together. Students who delay often did so because they were already struggling academically, so lower scores downstream are not purely caused by the delay itself. But extended time away from structured study, the psychological weight of being behind peers, and the challenge of maintaining motivation through a prolonged, uncertain timeline all compound the difficulty. If you find yourself in this situation, the key takeaway is that targeted support and a clear remediation plan matter far more than simply giving yourself extra calendar days.

The Pass/Fail Shift and Its Consequences

In January 2022, the USMLE changed Step 1 scoring from a three-digit numerical score to pass/fail. This was one of the biggest structural changes in medical education in decades, and it fundamentally altered the role of Step 1 in students’ careers. Before the change, a high Step 1 score was the primary screening tool for competitive residency programs. Students aiming for dermatology, orthopedic surgery, or neurosurgery, for example, often treated Step 1 preparation like a second full-time job.

The pass/fail transition was intended, in part, to reduce the pressure students experienced. The results on that front have been mixed. A study examining students after the scoring change found that they continued to experience heightened stress, anxiety, and burnout during the month leading up to the exam.¹³ The stakes of failing remain real, and many students report that the anxiety simply migrated rather than disappeared. About 73% of students in one survey said that the pass/fail change increased their anxiety about Step 2 CK scores, since that exam now carries the numerical score that residency programs scrutinize.¹⁴ Students targeting competitive specialties reported this anxiety at even higher rates.

For timing specifically, the pass/fail switch has complicated decisions at schools with post-clerkship Step 1. The transition created a period where some students at the same school would receive numerical scores and others would receive pass/fail results, depending on when they sat for the exam. That inequity was temporary but produced real anxiety in affected classes.¹⁵ Now that the transition is complete, some educators have argued that a post-clerkship Step 1 makes even more sense in a pass/fail world, since the exam’s role is now purely a competency check rather than a ranking tool.

The Wellbeing Problem During Dedicated Study

Regardless of when Step 1 falls in your curriculum, the dedicated preparation period is consistently identified as one of the most stressful stretches of medical school. A survey of students found that during dedicated study time, the vast majority reported worsening across multiple wellbeing measures. About 81% said their personal anxiety increased, 77% felt more burned out, and 72% said their overall quality of life declined.¹⁶ These numbers held up even after the pass/fail change. Simply knowing that you only need to pass does not erase the fear of failing, and the weeks of isolated, high-intensity review take a toll on sleep, exercise, social connection, and mental health.

Some schools have begun building wellness programming directly into the dedicated period. One approach involved creating a structured course during the study block that included academic support alongside explicit attention to nutrition, physical activity, and stress management.¹⁷ Whether these interventions actually change outcomes in a measurable way is still being studied, but the trend reflects broader recognition that dedicated time should not be treated as a period of pure academic survival.

Osteopathic Students and Dual Exams

Students at osteopathic medical schools (DO programs) face a unique timing puzzle. They are required to take the COMLEX-USA Level 1 for licensure, but many also choose to take USMLE Step 1 to broaden their residency options, since some allopathic residency programs historically preferred or required USMLE scores. Even in the pass/fail era, dual test-taking remains common. A study of osteopathic students found no significant differences in daily study hours, money spent on preparation, or types of resources used between those taking both exams and those taking only COMLEX.¹⁸

The order and spacing of the two exams matters, though. Research found that osteopathic students who took the USMLE exams first consistently achieved higher scores on both tests compared to those who took COMLEX first. Shorter intervals between the two exams, in the range of one to seven days, were associated with better performance, while waiting eight or more days between exams correlated with lower scores. Lower-performing students appeared to benefit the most from the USMLE-first strategy and a tight scheduling window.¹⁹ For DO students juggling both exams, the practical advice is clear: schedule them close together, and consider taking USMLE first while that material is freshest.

How the Timing Decision Plays Out in Practice

If you are a medical student trying to figure out when you will actually take Step 1, the short answer is that your school’s curriculum largely determines the window. At a traditional four-year school with a two-year preclinical phase, expect to take it in the spring or summer after your second year. At a school with an accelerated preclinical curriculum and post-clerkship Step 1 placement, expect to take it after completing your core clinical rotations, usually sometime in your third year.

Within that window, you have some flexibility in choosing your exact date. Most students schedule Step 1 toward the end of their dedicated study period, and the exam is offered at Prometric testing centers year-round. Your school may set a deadline by which you must test, particularly if clerkship start dates or other curricular milestones depend on having Step 1 behind you. If your practice exam scores are not where they need to be, your school may recommend or require you to push back the date. That decision should not be taken lightly, given the data on outcomes for students who delay, but taking an extra few weeks to ensure a pass is almost always better than testing before you are ready and failing.

One practical consideration that catches students off guard is scheduling availability. Prometric centers have limited seats, and in the spring testing season when thousands of second-year students are competing for slots, desirable dates at nearby centers can fill weeks in advance. Registering early and having a backup testing location in mind can save real headaches. The actual registration process goes through the NBME: you obtain a scheduling permit through your medical school, register on the NBME website, and then book a seat at a Prometric center.

Step 1 in Relation to the Residency Application Timeline

Even though Step 1 is now pass/fail, it still functions as a gatekeeper. You need a passing result to apply for residency, and the timing of your exam relative to the rest of your training affects your application in ways that are easy to underestimate. Students who take Step 1 on the traditional second-year schedule and pass have one less thing to worry about during their clinical years. Students who take it post-clerkship or who delay may be sitting for the exam closer to the start of the residency application season, which compresses the timeline for studying for Step 2 CK, building a strong clinical record, and completing away rotations.

The anxiety migration toward Step 2 CK is worth understanding in concrete terms. With Step 1 no longer providing a numerical score, Step 2 CK has become the primary exam-based differentiator for residency applications. Students applying to competitive specialties feel this pressure acutely. If you take Step 1 late and then need to rapidly pivot to Step 2 CK preparation, the compounding stress can be significant. Planning your exam timeline with the full residency application calendar in mind, not just the next test in front of you, is one of the most practical things you can do early in medical school.

For international medical graduates, the timeline looks different. IMG students are not on a fixed U.S. medical school curriculum, so they have broader flexibility in when they take Step 1. Many take it during or after their clinical years abroad, and the pass/fail change has simplified one aspect of the process for them: they no longer need to chase a specific numerical score to be competitive. However, the passing standard itself has not changed, and IMGs still need to demonstrate readiness through practice exams before testing, since a failure carries consequences for future applications.