OAR (ASTB-E) Prep: Subtests & Practice
The OAR (Officer Aptitude Rating) is the three-subtest subset of the ASTB-E used for US Navy, Marine Corps, and Coast Guard officer programs. It's computer-adaptive and covers math, reading, and mechanical comprehension. Here's how it's structured — with realistic COSMIQ practice.
COSMIQ prepares you for the OAR (ASTB-E) and administers realistic full-length mock tests — it does not administer the official test.
Frequently asked
What subtests are on the OAR?
Three: the Math Skills Test, the Reading Comprehension Test, and the Mechanical Comprehension Test. Scores range from 20 to 80, with 50 as the average.
How is the OAR related to the ASTB-E?
The OAR is the aptitude subset of the full ASTB-E (Aviation Selection Test Battery), required for officer programs like OCS and Direct Commission across the Navy, USMC, and Coast Guard.