Officer Aptitude Rating – OAR Test
A Comprehensive Guide to the Officer Aptitude Rating (OAR) Test: Eligibility and Preparation
Introduction
The Officer Aptitude Rating (OAR) Test is an essential exam for individuals seeking to become officers in the U.S. Navy, Marine Corps, and Coast Guard. The OAR assesses an applicant’s aptitude in areas that are critical for success as a commissioned officer, including mathematical ability, verbal reasoning, and mechanical comprehension. This article provides an overview of the OAR test, the eligibility criteria, and helpful strategies for preparing to achieve a competitive score.
Understanding the OAR Test
The OAR is a subset of the larger Aviation Selection Test Battery (ASTB), but it is specifically used to evaluate candidates applying for non-aviation officer programs. Unlike the ASTB, the OAR focuses solely on three sections:
- Mathematics Skills Test (MST): Assesses your understanding of basic mathematical concepts, including algebra, geometry, and arithmetic.
- Reading Comprehension Test (RCT): Evaluates your ability to understand and analyze written material, such as passages on a variety of topics, by answering questions related to the content.
- Mechanical Comprehension Test (MCT): Tests your knowledge of mechanical concepts and principles, including topics like basic physics, gears, pulleys, and electrical systems.
The OAR is scored on a scale from 20 to 80, and while there is no universal passing score, each branch of the military may have different minimum score requirements for their officer programs.
Eligibility Criteria for the OAR Test
To take the OAR and apply for an officer position in the Navy, Marine Corps, or Coast Guard, candidates must meet certain eligibility criteria:
- Education: Applicants are typically required to have at least a bachelor’s degree from an accredited institution. In some cases, candidates who are close to completing their degree may be eligible to take the OAR.
- Citizenship: Candidates must be U.S. citizens to be eligible for an officer program in the Navy, Marine Corps, or Coast Guard.
- Age: Each branch of the military has specific age requirements for officer candidates. Generally, applicants should be between 19 and 35 years old, although age waivers may be available in some cases.
- Physical and Medical Requirements: Candidates must meet physical fitness and medical standards set by their respective branches. These standards ensure that individuals are fit for the demands of military service.
- Moral and Character Standards: Applicants must pass a background check and demonstrate good moral character. This includes a clean criminal record and a history of responsible conduct.
How to Prepare for the OAR Test
Proper preparation is essential to achieving a strong score on the OAR test. Here are some tips to help you get ready:
- Familiarize Yourself with the Test Format: Begin by understanding the structure of the OAR. Each section tests different skills, so it’s important to know what to expect. Reviewing the content areas for mathematics, reading comprehension, and mechanical concepts will help you focus your study efforts.
- Use Study Guides and Practice Tests: There are numerous study guides and resources specifically designed for the OAR test. These materials cover all three sections of the exam and provide sample questions, explanations, and practice tests. Taking practice tests is especially helpful because it allows you to become comfortable with the format and timing of the actual test.
- Focus on Math Fundamentals: The Mathematics Skills Test (MST) is a key component of the OAR. Review basic algebra, geometry, and arithmetic concepts. Ensure you can solve problems involving equations, fractions, percentages, and geometry. Use online tutorials or textbooks to brush up on any areas where you feel less confident.
- Improve Reading Comprehension: The Reading Comprehension Test (RCT) evaluates your ability to quickly read and analyze written material. Practice reading complex passages on a variety of topics, summarizing their main ideas, and answering questions related to the text. Focus on improving your ability to infer meaning and interpret information.
- Study Mechanical Concepts: For the Mechanical Comprehension Test (MCT), review basic mechanical principles, such as forces, work, energy, and simple machines. Understanding concepts related to gears, levers, pulleys, and electrical systems will help you answer mechanical comprehension questions more effectively.
- Practice Under Timed Conditions: The OAR is a timed test, so practicing under timed conditions will help you manage the time pressure during the actual exam. Make sure you pace yourself and answer questions efficiently without spending too much time on any one question.
- Join Study Groups or Seek Tutoring: If you find certain sections challenging, consider joining a study group or seeking help from a tutor. Studying with others can provide different perspectives and enhance your understanding of the material.
Study Materials For OAR Test

The Officer Aptitude Rating (OAR) Test is a critical assessment for individuals aspiring to become officers in the U.S. Navy, Marine Corps, and Coast Guard. Meeting the eligibility criteria and preparing effectively are essential for success. By familiarizing yourself with the test format, using study guides, taking practice tests, and reviewing key concepts in math, reading comprehension, and mechanical principles, you can confidently approach the OAR and achieve a competitive score. Success on the OAR brings you one step closer to a fulfilling career as a military officer.
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