Certified Medical Assistant (AAMA) Exam Study Guide

The Certified Medical Assistant (CMA) credential is awarded by the American Association of Medical Assistants (AAMA) and validates competency across the clinical, administrative, and general knowledge domains that a medical assistant uses in day-to-day practice.

Format at a Glance

• Questions: 200 multiple-choice questions.
• Testing time: 160 minutes of answering time.
• Passing score: a minimum scaled score of 405.

With 200 questions to answer in 160 minutes, you have on average about 48 seconds per question. Building a steady pace and not lingering on any single item is one of the highest-leverage habits you can practice before test day.

The CMA exam is reported as a scaled score, not a raw percentage of questions answered correctly. To pass, you must reach the minimum scaled score of 405.

Why Scaled Scoring Matters

A scaled score adjusts for small differences in difficulty between exam forms, so a fixed raw-percentage target can be misleading. Because the passing bar is expressed on the scaled metric rather than as a percent-correct, the most reliable strategy is to answer every one of the 200 questions — there is no benefit to leaving items blank when you can make an educated guess.

Practical Takeaways

• Answer all 200 questions; use elimination to improve guesses on items you are unsure about.
• Treat 405 as the scaled threshold you must clear, and focus practice on raising overall accuracy rather than chasing a specific percent.

You have 160 minutes to answer 200 questions, which works out to about 48 seconds per question on average. Managing that budget deliberately is essential.

A Simple Pacing Plan

• Checkpoint by quarter: aim to complete roughly 50 questions every 40 minutes so you stay on track across the full 160 minutes.
• Flag and move on: if a question is taking much longer than a minute, mark it, choose your best current answer, and return later if time allows.
• Reserve a buffer: try to reach the final question with a few minutes left to review flagged items rather than finishing exactly at the buzzer.

Practicing full-length, timed sets that mirror the 200-question, 160-minute structure is the best way to internalize this rhythm before test day.

A focused preparation plan should mirror the real exam conditions: 200 multiple-choice questions completed within 160 minutes, aiming to clear a scaled score of 405.

Suggested Approach

• Diagnose first: take an initial timed practice set to find weak content areas across clinical, administrative, and general knowledge.
• Study in cycles: alternate targeted content review with timed question practice so you build both knowledge and test stamina.
• Simulate the real thing: periodically sit a full 200-question set under a strict 160-minute limit to confirm both your accuracy and your pacing.
• Track toward the passing bar: monitor your practice performance with the goal of comfortably clearing the 405 scaled-score threshold, leaving margin for exam-day variability.

Because the exam is comprehensive, spacing your study over several weeks and reviewing missed questions carefully tends to produce stronger, more durable recall than cramming.