BCBA practice exams: how to use them well

Practice questions are one of the best ways to prepare for the BCBA exam. A large review of study techniques (Dunlosky and colleagues, 2013) rated practice testing as one of only two high-value techniques, alongside spreading study out over time. Rereading and highlighting came out near the bottom.

But how you use practice exams matters as much as how many you do. Here's how to get the most out of them.

Full-length mocks vs short sets

They do different jobs, so you need both.

Short sets (10 to 25 questions) are where most of your learning happens. Do them by content area, or mixed, most days. They fit around a caseload, and you can review every answer while it's fresh.

Full-length mocks test stamina and pacing. The real exam is 185 questions in 4 hours, which works out at about 78 seconds a question, and the 4 hours includes the tutorial and any breaks. You only find out whether you fade after question 120 by sitting a full one.

A sensible pattern:

• At the start: a diagnostic to find your weak areas. Our free diagnostic is 40 questions, weighted by content area, and gives you a breakdown by area. It's a starting map, not a full mock.
• Most weeks: short sets aimed at your weakest, largest areas.
• The last 3 to 5 weeks: full-length timed mocks, spaced at least several days apart, with a full review after each.

How to sit a mock

Make it as close to exam conditions as you can:

• One sitting, timed, with no notes and your phone in another room.
• Breaks on the clock, as on the real day.
• Pace checkpoints: about question 50 at one hour, 100 at two hours and 150 at three.
• Answer every question on the first pass and flag only the ones where you're torn between two options.

If you're out of time with 20 questions left, that's a pacing problem, not a knowledge problem, and it's far better to find it now.

How to review: where the learning is

The score is the least useful part of a mock. The review is where you improve. Plan to spend at least as long reviewing as you spent taking it.

Go through four groups of questions:

1. Wrong and confident. These matter most. You believed something false, and you'll do it again on exam day unless you fix it.
2. Wrong and unsure. A gap you already knew about. Go back to the concept, not just the question.
3. Right but guessed. These count as unknowns. A lucky guess won't repeat.
4. Right and confident. A quick check is enough.

For each miss, write one line in an error log: the concept, why the right answer is right, why yours was wrong, and a rule for next time. Then label the cause:

• Knowledge gap: you didn't know the concept.
• Application gap: you knew the definition but couldn't spot it in the scenario.
• Reading error: you missed NOT, EXCEPT, FIRST or BEST.
• Second-guessing: you changed a right answer without a reason.

Each cause needs a different fix. More content review won't cure reading errors; slower, timed practice will.

What makes a good practice question

Not all question banks are equal. A good BCBA practice question:

• Maps to a task in the 6th edition outline. The exam is built from 104 tasks across 9 content areas, and a question bank should be too.
• Tests application, not recall. Most questions describe a situation and ask what's happening, or what to do. A bank of one-line definitions won't prepare you for that.
• Has four plausible options. If you can rule out two by common sense, it isn't teaching you to discriminate.
• Explains every option, including why the tempting wrong answers are wrong.
• Is weighted like the exam. Behavior-Change Procedures has 25 scored questions and Behaviorism and Philosophical Foundations has 8. A mock that over-samples small areas gives you a misleading score.
• Is original and sourced. Avoid anything sold as "real" or "recalled" exam questions. The BACB permanently prohibits sharing exam content, sharing it can put your results and future testing at risk, and these collections are often inaccurate.

For a feel of the real format, the BACB's handbook includes a few retired sample questions.

When are you ready?

No practice score can promise a pass, because no mock is the real exam form and the BACB doesn't publish a fixed passing percentage (see how the BCBA exam is scored). But you can look for strong signs:

• Two or more full-length mocks on fresh questions, days apart, at a level you're comfortable with.
• No content area far below the rest, especially the big ones.
• Pace under control, with time left to review flagged questions.
• Fewer confident-but-wrong answers from one mock to the next.
• You can explain your recent mistakes without looking them up.

If two or three of these are missing, put your exam date back a little and fix them first.

FAQ

Are free BCBA practice exams worth doing? Yes, if the questions are written to the 6th edition outline, test application and explain every option. A free diagnostic is a good first step because it shows where to spend your time.

How many practice questions should I do before the BCBA exam? There's no magic number. A thousand questions done without review teaches less than 300 reviewed properly. Aim for regular short sets, a few full-length mocks near the end, and a full review every time.

What mock exam score do I need to pass? No mock score guarantees a pass. Look for consistent results on new questions across all content areas, and not just one good overall number.

Can I find real BCBA exam questions online? You shouldn't use them. Sharing exam content breaks BACB rules, and it can affect your results and your ability to test again. Stick to original practice questions and the BACB's own retired samples.

Sources

• BACB, Board Certified Behavior Analyst Handbook (updated 06/2026): https://www.bacb.com/wp-content/uploads/2025/08/BCBAHandbook_260529-2-a.pdf (185 questions in 4 hours, questions per content area, retired sample questions, confidentiality of exam content)
• BACB, BCBA Test Content Outline (6th ed.): https://www.bacb.com/wp-content/bcba-outline-6thEd (104 tasks in 9 content areas)
• Association for Psychological Science, "Which study strategies make the grade?" on Dunlosky et al. (2013), Psychological Science in the Public Interest, 14(1): https://www.psychologicalscience.org/news/releases/which-study-strategies-make-the-grade.html (practice testing and distributed practice rated high utility; rereading and highlighting rated low)