If you want to see spaced repetition taken seriously, watch a medical student. Published surveys from the early 2020s estimated that over 86% of US medical students use Anki, with 66.5% studying daily — numbers no other learning tool in education comes close to. Here's what they're actually doing, and what the rest of us can learn from it.
The Shared Deck Is Everything
Most medical students don't build their own decks from scratch. They download a community-maintained deck — AnKing for USMLE, Zanki for preclinical, Lightyear for some Step 2 topics — and unsuspend cards as they encounter the material in class. Card creation is a part-time job medical students don't have time for, so the community does it.
Takeaway for everyone else: your first instinct shouldn't be "make a deck." It should be "find a deck." Creating cards is the slowest part of the loop.
Cloze Deletion Dominates
Open any AnKing card and you'll see sentences with words hidden by {{c1::...}} markers — cloze deletion cards. For factual medical content (drugs, mechanisms, dosages, side effects), cloze is faster to create, faster to review, and easier to keep atomic than the classic front/back format.
Takeaway: if your flashcard app doesn't support cloze, it's not really built for serious content learning.
Image Occlusion for Anatomy
The second indispensable card type is image occlusion — a diagram with labels hidden. Medical students use it for anatomy, pathology slides, and biochemistry pathways. It's a form of cloze for visual content.
Tagging Is How They Organize
Nested tags (#Step1::Cardio::Pharm::Beta_blockers) are how AnKing and similar decks stay navigable across tens of thousands of cards. When a student is on a cardiology block, they filter to the cardio tag and unsuspend only that subset. When Step 1 arrives, they unsuspend everything.
Review Load Is Brutal — And Managed
A serious medical student runs 200–400 reviews per day, every day, for two years. That's only sustainable if the scheduler is workload-efficient. Before FSRS, this was one of the biggest complaints about Anki — the default SM-2 parameters gave medical students more reviews than they needed for the same retention. FSRS reduces that load by 20–30% for the same recall, which is why the Anki medical community adopted it quickly.
Desired Retention Rises Before Exams
Many students run around 0.85–0.88 during the core learning window, then raise retention to 0.92–0.94 in the final six weeks before Step 1. This front-loads forgetting into the low-stakes period and concentrates certainty where it counts.
Consistency Beats Intensity
The single most-repeated piece of advice from med students who do well on Step 1: never skip a day. Streaks matter not because of the dopamine but because skipping creates a review debt that compounds. A three-day break from a 300-reviews-per-day queue produces a 900-card backlog. That's when people quit.
What Everyone Else Can Steal
- Start with a shared deck if one exists for your subject. Don't be a hero.
- Prefer cloze deletion over front/back for factual content. It's faster in both directions.
- Tag aggressively and filter ruthlessly. You don't need every card active at once.
- Raise retention temporarily before high-stakes events. Lower it again after.
- Protect the daily habit above everything else. A small session every day beats a large session every third day.
Medical students aren't successful with spaced repetition because they're smarter. They're successful because they treat SRS like a professional tool and optimize every part of the workflow around it. That approach works for language learning, law, certifications, and anything else you want to remember in six months.
Sources
- Lu, M. et al. (2021). Medical student use of Anki. BMC Medical Education.
- AnKing project: ankingmed.com
- FSRS: github.com/open-spaced-repetition