OAR and ASTB-E Pass Rate, Format & Study Guide

The OAR is made up of the math skills, reading comprehension and mechanical comprehension subtests and is reported on a scale of 20 to 80; the full ASTB-E also yields aviation scores on a 1-9 stanine scale (NAMI ASTB overview). There is no universal passing score: minimum scores differ by program and service. You may take the test three times, at least 30 days apart. This portal is a study aid: its 80-question practice set covers math, reading, mechanical comprehension and aviation and nautical information, and it does not reproduce the adaptive format or predict a score.

OAR and ASTB-E scores are used to select officer candidates and student aviators for the Navy, Marine Corps and Coast Guard.

Officer Candidate School and aviation program applicants.

The certifying body does not publicly publish an official pass rate for this exam. Be wary of third-party sites citing a specific number here — treat any pass-rate claim you see elsewhere for this exam as unverified.

You may take the ASTB-E or OAR three times in total, with at least 30 days between attempts (NAMI).

There is no single passing score: each program sets its own minimum OAR and ASTB-E scores. Use the percentage in this portal as a self-check, not a score prediction. Format: adaptive computer-based subtests; this portal practices four content areas. No official pass rate is available for this exam, so none is quoted here.

The OAR is made up of the math skills, reading comprehension and mechanical comprehension subtests and is reported on a scale of 20 to 80; the full ASTB-E also yields aviation scores on a 1-9 stanine scale (NAMI ASTB overview). There is no universal passing score: minimum scores differ by program and service. You may take the test three times, at least 30 days apart. This portal is a study aid: its 80-question practice set covers math, reading, mechanical comprehension and aviation and nautical information, and it does not reproduce the adaptive format or predict a score. Computer-based subtests: math skills, reading comprehension, mechanical comprehension (the OAR), plus aviation and nautical information and other aviation subtests in the full ASTB-E · question counts and times are not published as fixed figures. There is no single passing score: each program sets its own minimum OAR and ASTB-E scores. Use the percentage in this portal as a self-check, not a score prediction.

NAMI does not publish fixed topic weights. The portal practices arithmetic, algebra and geometry word problems; reading inference; mechanical principles such as fluids, levers, gears, electricity and forces; and aviation and nautical knowledge.

Testing is arranged by a recruiter or program officer once you are applying to an eligible officer or aviation program.

Arranged through your recruiter; confirm any costs with them.

Not applicable: scores are used for selection rather than renewed.

Work through the exam topics one area at a time, finish with timed full-length practice runs of 80 questions in one sitting.

Content outlines, fees and passing standards change; this guide follows the official documents listed under Verification as of October 2026. Check your recruiter and NAMI before you register.