ARGONAUTUSMLE

Guide · updated 11 October 2026

A USMLE Step 2 CK study plan, from clerkships to test day

In short: do questions on each rotation during your clerkships and treat shelf exams as checkpoints. Then take a dedicated period, often 4 to 6 weeks, of mixed timed 20-question blocks with full review, regular self-assessments and focused work on your weakest areas.

By the Argonaut editorial team. How we write and review

Calculator

Size your dedicated period

Move the sliders. The plan updates as you go.

5 weeks

6 days

80 questions

Questions in total
2,400
Blocks per study day
4 × 20 questions
Hours per study day
about 4.7
Step 2 CK bank on Argonaut
3.3 passes through 737
  1. Week 1Take a baseline self-assessment. Start 4 timed 20-question blocks a day and review every question.
  2. Weeks 2–4Mixed timed blocks every study day. Spend extra time on your three weakest systems, and keep an error log.
  3. Week 3Second self-assessment. Re-rank your weak areas from the result.
  4. Week 5Final self-assessment early in the week, lighter blocks after it, and rest the day before the exam.

Assumes 90 seconds to answer a question (exam pace) and about 2 minutes to review it. Adjust to how you actually work.

The stages

From clerkships to test day

  1. 01

    During clerkships

    Do questions on the specialty you're rotating through, in tutor mode so you learn as you go. Write down what you see on the wards that shows up in questions, and the other way round.

  2. 02

    Shelf exams

    Treat each shelf as a checkpoint. A weak shelf result tells you which specialty to revisit before dedicated.

  3. 03

    Dedicated

    Mixed, timed 20-question blocks every study day, with full review and an error log. Re-test every week or two and spend extra time on your three weakest areas.

  4. 04

    Final week

    A last self-assessment about a week out, lighter blocks after it, and rest the day before.

Priorities

Where to spend the hours

Medicine is the largest clinical science on the official outline, at 55–65% of items, followed by pediatrics (17–27%), obstetrics and gynecology (10–20%), psychiatry (10–15%) and surgery (5–15%). Social sciences, including ethics, professionalism and patient safety, add 10–15%.

By task, diagnosis (16–20%), laboratory and diagnostic studies (13–17%) and mixed management (12–16%) lead. Practice choosing the next step, not just naming the disease.

Practice by subject: internal medicine, OB/GYN and psychiatry.

Shares from the USMLE Step 2 CK content outline, checked 11 October 2026. Items can count toward more than one clinical science.

With Argonaut

How the plan maps onto Argonaut

Filter blocks by system during clerkships, then switch to mixed timed blocks for dedicated. ARGO sessions aim each block at the topics costing you the most points and retest your earlier misses on a schedule.

Argonaut has 737 Step 2 CK questions, and the same $48 also unlocks the Step 1 bank if you want to refresh the basics. Review method: how to review USMLE questions.

Questions people ask

01When should I take Step 2 CK?

Most students take it after their core clerkships, when clinical knowledge is freshest, often with a short dedicated period of about 4 to 6 weeks. Check your school's and your target programs' timelines before you book.

02How many questions a day should I do for Step 2 CK?

During clerkships, a steady 10 to 40 a day on the current rotation keeps you moving. In a dedicated period, common targets run from about 40 to 120 a day in timed 20-question blocks, with full review.

03How do shelf exams help with Step 2 CK?

Each clerkship's shelf exam covers part of the same ground, so studying for shelves is studying for Step 2 CK. Use shelf results as checkpoints to find the specialties to revisit in dedicated.

04How is Step 2 CK different from Step 1?

Step 2 CK is scored and tests clinical decisions: the likeliest diagnosis, the next best step, the right drug, what to screen for. Step 1 is pass/fail and tests mostly mechanisms.

05When should I take a self-assessment?

At the start of dedicated for a baseline, every week or two to re-rank your weak areas, and about a week before the exam. The NBME sells official self-assessments, and the USMLE website has free sample questions.

More guides

Start on the clinical decisions.

Try the free Step 2 CK questions. Full access adds every question, plus the Step 1 bank and ARGO, for $48 once.

Free Step 2 CK questions Step 2 CK bank

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