Understanding Behavior

Ready to pass the BCBA® exam?

Understand the concepts. Break down the questions. Build your exam-day confidence with Nick and the UB team.

I want to pass the BCBA exam Get my free mini mocks
Nick Ostosh, founder of Understanding Behavior Meet Nick.Nick Ostosh, BCBA · Founder

Your first 50 practice questions are on us

Come discover your first few💡moments at UB with two free mini mocks on us!

Are you ready for a challenge? ⚔️

Don't worry! Our meticulously crafted rationales will light the way if you get caught off guard! 

  • 50 practice questions
  • Detailed answer feedback
  • No purchase required
Beastslayer Students Enrolled
4,000+
Mock Exams Delivered
15,000+
Stars on Beastslayer Comprehensive Course
4.96
Free Live Teaching Hours Delivered
Free Live Teaching Hours Given

As of November 2026 · Ratings are out of 5 stars.

Which powerups will you choose?

Thousands have used these tools before you to beat the BCBA exam. No matter how you learn, we've got the tools for you

THE FULL STUDY TOOLKIT

Complete BEAST Mode Bundle!

Complete Beast Mode

Our best offer. Containing our signature Beastslayer Course, three full-length mock exams, Mini Mocks, and Fluency package, you'll have everything you need to slay the beast! Go Complete BEAST Mode on your studying!

$475.00 USD$614.00
Explore Complete Beast Mode

PUT IT INTO PRACTICE

SUPER ULTIMATE Mock Bundle - BCBA Exam

Super Ultimate Mock Bundle

Practice realistic exam questions and learn from our meticulously crafted feedback in our our three full-length Beat the Beast mock exams and Mini Mocks for Mastery bundle in the Super Ultimate Mock Bundle

$189.00 USD$249.00
Explore Super Ultimate Mock Bundle

BUILD YOUR UNDERSTANDING

Behavior Beastslayer Course - Comprehensive BCBA Exam Course

Beastslayer

Go deeper with Nick through engaging, interactive lessons, frequent follow-up quizzes, printable graphics, and explanations that help the concepts click. Feel confident talking about behavior by easily learning the framework that makes it stick in Beastslayer. Are you worthy of the trophy? 🏆

$325.00 USD
Explore Beastslayer

Click above to explore each package's contents & access details

Nerdy. Engaging. Effective

You don't need to commit to a full package to see how UB teaches. Start with the free practice and go from there.

Get my free resources
What does UB offer for free?

Once you sign up, we'll send you the link to access our two free mini mocks!! We also offer three free weekly study groups, a free trial of our Beastslayer course, daily questions on our instagram, fun and deep instructional videos on youtube, and soooo much more! Unsubscribe anytime

How do I access my courses?

Our courses are hosted on our learning platform Learnworlds

Login to your account using the same email as checkout 

Open up a course page, scroll down, and click on free sections to access free trials

Is this for first-time or repeat test takers?

Both. Start with the free practice to see how UB explains concepts and question breakdowns. Then choose additional support based on the areas you want to strengthen.

Which package should I choose?

Choose Beastslayer for a course-led study plan, Super Ultimate Mock Bundle for a practice-focused bundle, or Complete Beast Mode for the course and practice tools together. Each product page has the full inclusions and access terms.

The correct question to ask yourself is "how much do I want to learn about my profession?" to make this decision. 

Does a prep course guarantee a passing score?

Simple answer - no. Passing the BCBA exam depends on many factors such as university program, supervision experience, and study habits. 

Our Beastslayer course typically raises student scores 25-50 points after a 30 day run (Est. 25-40 hours of studying) and has resulted in 100s of first time passing BCBAs. Results not guaranteed or promised in any way.