The OAT

1. Start Here

Learn what's on the test and what scores schools saw.

• The OAT, ExplainedFormat, scoring, fees, score reports and retake rules.
• What's a Good OAT Score?Entering-class AA averages ran from 280 to 360 across the 24 programs that report one.
• Stats CheckerSee where your GPA and OAT sit against each school's entering class.

Test at a glance: four computer-based, multiple-choice sections, scored 200 to 400 with no passing score. Schools look at your Academic Average (AA) and Total Science (TS).

2. Prep

Pick a plan and a study method.

• OAT Study PlanFree 8-week and 12-week OAT schedules, week by week, with what to study for each section.
• Which OAT Prep?Prep options compared side by side on price, format, practice tests and guarantees.
• Partners and ResourcesEvery OAT prep company we compare, plus the free official resources, with how each gets listed.

No company pays to be listed or ranked here. Which OAT Prep compares Chad's Prep, Kaplan, OAT Bootcamp, OAT Booster, Princeton Review tutoring and the official ADA practice test on the same criteria.

3. Test Day

Know the rules before you register.

• Practice vs. Real OAT ScoresWhat the ADA says about practice questions, how the real score is built and how to use practice tests without over-reading them.
• Retake RulesWait 60 days between attempts, at most four in any 12 months. Schools see every attempt.

Format: four sections (Natural Sciences, Reading Comprehension, Physics, Quantitative Reasoning), about 5 hours with breaks, at a Prometric test center. Fee: $520 for the testing year ending June 30, 2026, with score reports to your chosen schools included. The ADA updates the fee each July, so confirm it when you register.

4. After the Score

See where you stand and decide what's next.

• OAT Score TrackerLog practice and real scores and see how your latest sits against each school's class.
• Application DeadlinesCheck each school's deadline so your score arrives in time.