How Hard Is the MCAT?

Why Is the MCAT So Hard?

The MCAT is challenging for several reasons. You need to know material across multiple subjects, apply that knowledge to unfamiliar passages and data, work efficiently under time pressure, and maintain your concentration for most of the day. Understanding what makes the MCAT hard can also help you prepare for each of those challenges more effectively.

Length and Mental Endurance

One of the biggest challenges of the MCAT is its length. The exam includes six hours and fifteen minutes of testing time, with a total seated time of seven and a half hours. That includes two optional ten-minute breaks, an optional 30-minute mid-exam break, and other exam-day procedures.

Maintaining your focus for that long takes practice, which is why building endurance should be part of your MCAT prep.

Extensive Range of Content

Another reason the MCAT is so difficult is the sheer breadth of material it covers. The MCAT is divided into four sections: 

• Chemical and Physical Foundations of Biological Systems (59 questions)
• Critical Analysis and Reasoning Skills (CARS) (53 questions)
• Biological and Biochemical Foundations of Living Systems (59 questions)
• Psychological, Social, and Biological Foundations of Behavior (59 questions)

Together, these sections draw on biology, biochemistry, general and organic chemistry, physics, psychology, sociology, and critical reasoning. The science sections also require you to connect concepts across disciplines rather than treating each subject in isolation.

Because the exam covers so much material, being particularly strong in one subject isn’t enough. Effective preparation requires identifying weaker areas while maintaining your skills across all four sections. Reviewing high-yield MCAT topics can help you prioritize the concepts you’re most likely to encounter.

Application-Based Questions and Time Pressure 

Another layer of difficulty comes from the way MCAT questions are structured. Many questions are based on passages, experiments, graphs, or other information you need to interpret before applying what you know.

The science sections include both passage-based and discrete questions, while CARS is entirely passage-based and tests your ability to understand, analyze, and reason through texts from the humanities and social sciences. The AAMC notes that CARS doesn't require specific outside content knowledge, so the questions are testing your comprehension, analysis, and reasoning skills.

You’ll also be asked to do some math on the exam, mainly arithmetic, ratios, and scientific notation, without the use of a calculator. While the math isn’t advanced, performing quick calculations under time pressure can add another layer of challenge.

This is why practice questions are such an important part of MCAT prep. They help you not only learn the material, but how to recognize what a question is asking and apply your knowledge efficiently.

Pressure to Earn a Competitive Score

The MCAT can also feel difficult because your score is an important part of your medical school application.

What counts as a competitive MCAT score depends on the schools you’re targeting. For context, the current mean score among all MCAT test takers is 500.6. A 510 falls around the 79th percentile, while a 514 falls around the 89th percentile.

Medical school matriculants tend to score higher. Among students entering U.S. MD programs in 2025, the mean MCAT score was 512.1, and the 2025 mean for students entering U.S. DO programs was 502.95.

At the most competitive medical schools, typical MCAT scores are even higher. For example, recent entering classes at several Ivy League medical schools reported average or median MCAT scores in the mid-to-low 520s, including 523 at Yale, 522 at Penn, and 521.07 at Harvard.

That doesn’t mean there is one MCAT score every applicant needs. Your target should depend on your overall application and the typical scores at the schools you’re considering. Our guide to MCAT scores can help you determine what score may be competitive for your goals.

How to Make the MCAT More Manageable

The MCAT is difficult, but the right preparation can make the exam much more manageable. A strong study plan should help you identify your weaknesses, become comfortable with MCAT-style questions, and gradually build the endurance you’ll need on test day.

1. Start with a Diagnostic and Build a Study Plan

Start your MCAT prep by taking a diagnostic practice exam. Your baseline score can help you identify which sections and topics need the most attention before you decide how long you’ll need to study.

If you use the AAMC Sample Test as your starting point, our MCAT score calculator can help you convert your raw results into an estimated scaled score.

From there, create a structured MCAT study schedule based on your target score, current strengths and weaknesses, and the amount of study time you have available each week. Some students may be ready in a few months, while others benefit from a longer prep period.

As you study, balance content review with practice questions. Knowing the material is important, but you also need to experience applying that knowledge in the passage-based format you’ll encounter on the exam.

Note: If you need special accommodations for the MCAT, such as extended time or a separate testing environment, file for that request about four months before your test date. That gives you enough time to appeal a decision, if needed. 

2. Practice Under Realistic Conditions

As your preparation progresses, take full-length practice exams under conditions that closely resemble test day, including timed sections and scheduled breaks. This can help you build the pacing, concentration, and endurance required for the real MCAT.

Just as important is what you do afterward. Review both incorrect answers and questions you answered correctly but weren’t confident about. Look for patterns in your mistakes so you can determine whether you need more content review, better pacing, or a different approach to certain question types.