Medical School MD + DO Mastery

A 4-year, board-aligned study system for medical school and licensing exams.

Walk the full Year 1–4 curriculum — foundational sciences, organ-system blocks, clinical clerkships and advanced practice — each with mastery checklists and linked learning resources, plus a dedicated review system for school exams, Shelf/COMAT, USMLE Step 1–3 and COMLEX-USA Levels 1–3.

CUMULATIVE SPIRAL REVIEW

ALL YEARS | PAGE 41B - LAYER 2: RETENTION, SPACING + INTERLEAVING

LAYER 2 PREVENTS THE "PASSED IT, LOST IT" PROBLEM. Older knowledge should remain accessible while new blocks accumulate; otherwise every board-prep period becomes expensive relearning. C. LAYER 2 - CUMULATIVE SPIRAL

CadenceWhat to sampleHow to judge the sample
24-72 hours after repairA NEW question/image/case testing the repaired rule.Can the learner reproduce the rule without the old explanation and apply it when surface details change?
WeeklyOne mixed cumulative block; selected prior-system retrieval; repeat-error concepts; image/graph/practical sampling where relevant.Older material should remain retrievable with acceptable timing. Recurring errors should become less frequent and narrower.
Monthly / end of blockWeak-system trend, error-type trend, low-confidence corrects, late-block timing, practical/clinical feedback.Use data to choose the next 1-3 repair targets; do not reopen the entire curriculum.

D. TOP 10 REVIEW CONCEPTS - #4 TO #6 — 4. The cumulative spiral must be scheduled, not hoped for Deep explanation

Retention decays when old material disappears from the study environment. A spiral deliberately samples prior blocks while current material remains dominant, so retrieval strength is maintained without restarting whole courses.

D. TOP 10 REVIEW CONCEPTS - #4 TO #6 — 4. The cumulative spiral must be scheduled, not hoped for Deep explanation

ResourceDescriptionLink
Why learners miss itCurrent deadlines always feel more urgent, so cumulative review is postponed until it becomes full relearning.

D. TOP 10 REVIEW CONCEPTS - #4 TO #6 — 4. The cumulative spiral must be scheduled, not hoped for Deep explanation

Easiest clueEvery week needs an old-content slot. Small planned samples beat rescue review.
5. Repair is incomplete until the learner re-tests after delay
Deep explanationReading an explanation can fix understanding in the moment, but durable change is demonstrated only when the concept survives delay and appears in a new representation. The Academy uses 24-72 hour re-test plus later mixed sampling.
Why learners miss itImmediate reattempts benefit from memory of the explanation and can create false confidence.
Easiest clueDifferent item + later time. Recognition of the same question is not retrieval.
6. Interleave after initial structure is built
Deep explanationBlocked practice is efficient for first learning of a new pattern; interleaving related problems later forces the learner to decide which strategy, diagnosis or formula applies. That discrimination resembles real exams and clinical work.
Why learners miss itLearners either mix too early and feel random, or remain blocked too long and never practice strategy selection.
Easiest clueBuild first, mix second. Interleave when you can solve the basic form but need to choose among look-alikes.

D. TOP 10 REVIEW CONCEPTS - #4 TO #6 — E. SPIRAL MAINTENANCE RULE

Keep strong but high-value material alive with brief retrieval. Repair recurring errors aggressively. Re-test repaired concepts on new material. Defer low-yield duplication. The spiral should be small enough to sustain while the current course remains the main workload. 2026/27 review-system expanded edition - verify school and official exam updates before testing