The MCAT is 7.5 hours across 4 sections of ~25% each. AAMC's official practice (Section Banks, Full Lengths, Question Packs) is the canonical material. Khan Academy fills Psych/Soc free. Third-party prep (Kaplan, Princeton Review, Altius) is supplementary. exclam.ai is the planner that schedules all of this around your test date and tracks per-section mastery.
Four sections, roughly equal weight (~25% each), scaled to a section score with the total reported. The AAMC Content Outline lists testable content within each section publicly.
| Section | Weight |
|---|---|
| Chemical and Physical Foundations of Biological Systems (Chem/Phys) | ~25% |
| Critical Analysis and Reasoning Skills (CARS) | ~25% |
| Biological and Biochemical Foundations of Living Systems (Bio/Biochem) | ~25% |
| Psychological, Social, and Biological Foundations of Behavior (Psych/Soc) | ~25% |
AAMC official practice materials (Section Banks, Full Lengths, Question Packs) are the closest to the real exam — you should buy them directly from AAMC. Khan Academy is free for Psych/Soc. Third-party prep (Kaplan, Princeton Review, Altius) is supplementary. exclam.ai is the daily plan + flashcard + spaced retention layer that wraps all of this into a schedule against your test date.
Most candidates spend 300–500 hours over 3–6 months. Premed students typically plan summer-long dedicated prep. Working candidates need longer runways with consistent weekly hours.
CARS is pure reasoning — no content to learn. The improvement curve is slow and based on daily passage practice. exclam.ai schedules 1 timed CARS passage per day during dedicated; volume above that is counterproductive.
Upload Khan Academy notes, your section-summary docs, or your weak-area materials. exclam.ai builds a daily plan tied to your test date and tracks per-section mastery.