OAR Test

The Officer Aptitude Rating (OAR) test is actually a subset of the larger Aviation Standard Test Battery used by the Navy, Marine Corps, and Coast Guard. The OAR includes the first three, core tests in math, reading comprehension, and mechanical comprehension. Your scores on this test will be used to decide whether you qualify for officer training. It will also be used to help decide which occupation(s) you will be most suited for.


OAR Study Guide

Who Is Eligible to Take the OAR Test?

The OAR is open to anyone who meets the minimum criteria for applying to the officer training program. In order to apply for officer candidate school, you need to be a US citizen between the ages of 19 and 35, and you need to have your bachelor’s degree.

If you meet those criteria, you can register for the OAR and apply for the officer training program. As part of the application process, you will also undergo a thorough background investigation.

To schedule your exam and learn more about what is involved in the application process, talk to your recruiter. You will be allowed to take the test a maximum of three times in your lifetime. So it is important to schedule an appointment that leaves you with plenty of time to prepare and make sure that you do your best.

How Long Does the OAR Test Take?

It can take anywhere from 1.5 up to 2 hours to complete the OAR in APEX (the computer version); the paper version of the OAR may take slightly longer to complete. Please note the following time limits and number of questions for the paper version of the OAR: Math Skills Test – 30 Questions, 40 Minutes; Reading Comprehension Test – 20 Questions, 30 Minutes; Mechanical Comprehension Test – 30 Questions, 15 Minutes

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What Skills Will I Be Tested on During the OAR?

The OAR is made up of three subtests. Below is a brief outline of what each paper test will include (computer test may vary):

  • Math Skills Test – 30 Questions
    • Basic arithmetic operations
    • Solving for variables
    • Fractions
    • Roots
    • Exponents
    • Calculation of angles
    • Area
    • Perimeter
  • Reading Comprehension Test – 20 Questions
    • Extract meaning from text passages
    • Drawing direct inferences from the text
  • Mechanical Comprehension Test – 30 Questions
    • Principles of gasses and liquids
    • Pressure
    • Volume
    • Velocity
    • Engine components
    • Engine performance
    • Principles of electricity
    • Gears
    • Weight distribution
    • Simple machine operation
    • Pulleys
    • Fulcrums

All questions will be multiple choice and aimed at measuring your basic understanding of these essential principles. All the questions are intended to gauge whether you possess the fundamental cognitive skills and knowledge to succeed in the officer training program.

What Score Do I Need to Get on the OAR Test?

The OAR is given a cumulative score ranging from 20 to 80. Average scores range from 40 to 60. The minimum score you need to aim for in order to qualify for officer training will depend on which branch of the military you are in.

For the Navy, for example, you will need a minimum score of 35. It is highly recommended that you aim above this minimum, however. Many officer training programs are competitive and have a limited number of available spots. Even if you do meet the minimum cutoff, you are not guaranteed admission. The higher your score, the stronger your application will be.

What’s the Best Way to Prepare for the OAR Test?

In order to do well on the OAR, you need to strengthen the core cognitive skills that each of the subtests measures: math, reading comprehension, and mechanical comprehension. Doing that effectively takes practice.

Spend at least a couple of weeks with the Mometrix Study Guide to sharpen each of these skills. These study tools provide sample questions that will help you practice answering exactly the kind of questions you’ll see on the test.

More importantly, they each provide you with proven methods and strategies for improving these core skills and applying them to the kind of material you are going to see on test day.

OAR Study Guide

Mometrix Academy is a completely free OAR test resource provided by Mometrix Test Preparation. If you find benefit from our efforts here, check out our premium quality OAR Study Guide and OAR Flash Cards to take your studying to the next level. Just click the OAR study guide link below. Your purchase also helps us make even more great, free test content for test-takers.

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OAR Study Guide

OAR Study Guide Customer Success Stories

Our customers love the tutorial videos from Mometrix Academy that we have incorporated into our OAR test study guide. The OAR study guide reviews below are examples of customer experiences.

This study guide has a lot of useful information for reading, math, and mechanical comprehension. The mechanical section is very good and goes into much detail like the OAR. The video links to further explain the problems is a major plus!

OAR Study Guide – Gabby

This book was the closest guide to the real test! I only had a week to prepare and I was really happy with my score thanks to this book! Totally would buy it if you're considering the OAR.

OAR Study Guide – Ryan R.

This book gives you all the formulas for [Math, Mechanical Comp.] and good tips for Reading Comp. The Reading Comprehension section gives excerpts from actual aviation books, and asks you the comprehension questions from that. I'm really glad I bought this!

OAR Study Guide – Ana

I'm really enjoying your book and it is easy to read and to understand! No complicated explanations and examples. As a matter of fact, I don't even use the other one I bought together with your book. Now my confidence is up and I feel good about taking the OAR test. I will recommend to everyone.

OAR Study Guide – Customer

I have been using your study guide so far and I love it! Everything is simple, concise and to the point. Very easy to understand, especially the Mechanical Comprehension which is something I am not too familiar with. I also especially loved the section on Math myths! It wasn't something I was expecting to find in a study guide, but I'm glad that it was included, because it helped ease my anxiety with math.

OAR Study Guide – Kerry

The material in the study guide is a far more accurate and detailed review of what is actually on the test. It gives great explanations on what types of problems there are and what kind of strategies will help you to improve your score. I also enjoy that you can go online for additional information and study material.

OAR Study Guide – Ryan C.

Excellent study guide! It is very practical, easy to retain information, and to the point. The online lessons included are very helpful for visual learners like me! Highly recommended.

OAR Study Guide – Customer

From the materials you provided, I will feel more comfortable with my studies to pass this test my second round. I would definitely recommend this book to anyone who wants to study and pass the OAR exam. I found that the Math portion is in-depth and shows how to work through the materials that can be understood better.

OAR Study Guide – Miriah

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by Mometrix Test Preparation | This Page Last Updated: September 7, 2022