RBT Exam Passing Score Explained (And Why There Is No Fixed Percentage)
The BACB sets a criterion-referenced passing standard, not a fixed percentage, for the RBT exam — here is what that means and why 80% to pass is a myth.
~6 min read
Aligned to the RBT Task List 3rd Edition (effective 1 January 2026) · Last content review: August 2026 · How we write our questions
How the RBT exam is actually scored
The BACB does not grade the RBT exam the way a classroom test is graded, where a fixed number of correct answers equals a pass. It uses a criterion-referenced passing standard set through the modified Angoff method: a panel of BACB-certified subject matter experts rates how a minimally competent candidate would perform on each item, and the BACB Board of Directors approves the resulting cut score.
Because your result is compared against that fixed competency standard rather than against how other people taking the exam that day performed, two candidates can sit different forms of the exam — with different questions of different average difficulty — and still be held to the same underlying bar.
Why a single percentage can't describe it
A percentage pass mark only makes sense if every version of the exam is exactly as hard as every other version. The RBT exam draws from a large item bank across multiple forms, and item difficulty is never perfectly identical between forms. The modified Angoff process exists specifically to correct for that: it adjusts for a form's measured difficulty so the competency bar stays constant even though the raw number of correct answers needed to clear it can shift slightly from form to form.
That is also why the BACB reports pass/fail rather than a running percentage for candidates to aim at. Stating one fixed number would misrepresent a system that is deliberately built to flex per form.
Where the '80%' and '200 out of 250' numbers actually come from
Search for RBT passing score and you will find both numbers stated as fact on multiple prep sites. Neither is something the BACB publishes as a citable passing standard. Some certification exams do report results on a 0–250 scaled range, and prep sites have generalized that into a specific target for the RBT exam — but the BACB does not publish a scaled cut score for the RBT exam as public information, and treating 200/250 as a guaranteed figure is exactly the kind of confident-sounding but unverifiable claim this page exists to correct.
80% is different — no credible source presents it as an official number. It's a round figure candidates converged on informally as a personal readiness target on practice exams. It's a reasonable benchmark to set for yourself. It is just not the BACB's pass mark, because the BACB has not published one in percentage terms.
What your score report actually tells you
If you pass, your report says pass. The BACB does not release your specific score, so there is nothing to compare against a target number even if you wanted to.
If you don't pass, your report gives you a breakdown by content area — how you did across the six task list domains — without giving you a single overall number either. That domain breakdown is the actionable part: it tells you where to spend your revision time before you retake, not how close you came to some threshold.
How to use a practice-exam percentage sensibly
A percentage score on a practice exam like this one is still useful — just not as a proxy for the BACB's cut score. Use it to compare yourself across attempts and across domains, and treat 80%+ on two or more different full-length attempts as a reasonable personal signal of readiness, the way many candidates do. Then use the domain breakdown, not the overall percentage, to decide what to study next.