Study smarter for your COA exam

1,600+ practice questions, study guides, and timed mock exams for the JCAHPO COA certification — with AI explanations when an answer doesn't click.

Start your 7-day free trial Try a free practice test

1,600+: practice questions across four exams
22: official IJCAHPO COA content areas covered
51: content areas and domains with a study guide
1: free mock test every day, no card needed

Study Materials

Study guides for all 22 COA content areas

Mock Tests

Full-length practice exams with timed sessions

Practice by Category

Focus on specific topics to strengthen weak areas

Test History

Track your progress and identify areas for improvement

Exam Simulation

200-question timed exam matching the real COA format

AI Explanations

Stuck on a question? Get instant AI explanations in simpler terms, by analogy, or why your answer was wrong — included in all paid plans

Free Resources

Official IJCAHPO links, study references, and learning resources

Plans

Compare all plans →

Free

$0

COA

$9.99/month

Most Popular

COT

$19.99/month

Next Rung Up

CPO

$9.99/month

CPOA

$19.99/month

Next Rung Up

Complete

$29.99/month

Best Value

Monthly prices shown. Paying yearly saves up to 25% — compare both on the pricing page. Every paid plan starts with a 7-day free trial.

22 Study Categories

Free practice tests and study resources

Try sample questions from every content area in the free COA practice test with answers and explanations, then read the free COA study guides for all 22 content areas. New to the exam? Start with how to get COA certified: who can take it, how to apply, and what it covers.

Studying for a different exam? Try the free COT practice test, CPO practice test or CPOA practice test, each with answers and explanations.