The short answer
You need a scaled score of 650 on a 0–900 scale to pass the RCES. It is a scaled score, not a percentage — there is no fixed “percent correct” that guarantees a pass, because the bar is calibrated to each form’s difficulty. Of the 170 questions, 20 are unscored pretest items, so answer every question with equal effort.
What “scaled score” means
Your result is reported on a scale from 0 to 900, and 650 is the line. Crucially, 650 is not 650/900 = 72% of questions correct. Scaled scoring converts your raw performance onto a common scale so that the standard to pass is the same no matter which version of the exam you happened to receive.
Think of it as translation rather than arithmetic. Two candidates sitting different forms of the RCES on different days are not answering the same questions, and those question sets are not exactly equal in difficulty. Scaled scoring exists so that the two results mean the same thing.
Why there is no fixed “percent correct”
Different exam forms vary slightly in difficulty. Scaled scoring equates for that: on a harder form, the raw number of correct answers needed to reach 650 is a little lower; on an easier form, a little higher. That is why chasing a percentage on random question sets can mislead you — a blueprint-matched, full-length practice exam is a far better readiness signal than “I got 78% on a set of thirty.”
Beware the 72% coincidence. 650 out of 900 happens to be about 72%, and the RCES first-time pass rate is 73%. Neither of those is a percentage of questions you need to answer correctly, and the numerical similarity is meaningless. Three different numbers, three different meanings.
The 20 pretest questions
Of the 170 questions on the RCES, only 150 are scored; the other 20 are unscored pretest items being trialled for future exam forms. You will not be told which is which, and there is no reliable way to spot them.
The practical consequences are worth stating explicitly:
- Treat every question as if it counts, because you cannot know which ones do.
- An unfamiliar or oddly-worded question is not evidence you are failing. It may simply not be scored. Candidates talk themselves into a spiral over one strange item; do not be one of them.
- Your time budget is 170 questions in 3 hours, roughly a minute per item, regardless of how many are scored.
What this means for how you practise
Because the pass bar is scaled, the useful question is not “what percent am I getting?” but “am I consistently passing full-length, timed, blueprint-matched mock exams?”
Concretely, that means:
- Track by domain, not by aggregate. An overall 75% that hides a collapse in post-procedural content is worse than a 70% spread evenly. Score yourself against the RCES blueprint weights — intra-procedural 36%, diagnostic 26%, therapeutic 21%, pre-procedural 9%, post-procedural 8%.
- Rehearse the full three hours at least twice. Accuracy in hour three is a different skill from accuracy in hour one, and it is not one you can infer.
- Grade yourself on explanation, not recognition. If you can only recognise the right answer, you are relying on a cue that the exam will remove.
Our RCES study guide turns that into an actual week-by-week schedule.
When and how you get your score
The RCES is delivered on a computer at Pearson Professional Centers, and computer-based delivery is what makes prompt score reporting possible. CCI sets the specifics of score reporting, retake policy, and any re-examination fee, and those details can change — check CCI’s current policy rather than trusting a forum post or this page for the mechanics.
If you do not pass
CCI allows candidates who do not pass to retake the exam after a waiting period. The specific interval and any re-examination fee can change, so confirm the current retake policy directly on CCI’s site before you rebook.
The more useful thing to know is what to do with the result. A first-attempt failure is a diagnostic. It tells you, with more precision than any practice test, where your gaps are — and the people who come back and pass generally did not study harder the second time, they studied narrower. Take the domain breakdown seriously and rebuild your plan around your two weakest areas rather than starting the whole curriculum again.
Find out where you actually stand, in 25 questions
A free RCES diagnostic drawn from the Cardiac Codex curriculum, with a topic-level breakdown of your weak domains. Pick your exam and the first question loads immediately — the questions start right away, and no email is required.
Start the free diagnostic The RCES Exam: Complete 2026 Guide →RCES scoring FAQ
What score do you need to pass the RCES?
A scaled score of 650 on a 0-900 scale. It is a scaled score, not a percentage of questions correct.
Is the RCES passing score of 650 a percentage?
No. 650 is a scaled score on a 0-900 scale, calibrated to the exam form’s difficulty. It does not correspond to a fixed percentage of questions answered correctly.
How many questions do I need to get right to pass the RCES?
There is no fixed number. Because scoring is scaled to the difficulty of the form you receive, the raw number of correct answers required to reach 650 varies between forms. This is why full-length blueprint-matched practice is a better readiness signal than a raw percentage.
Are all 170 RCES questions scored?
No. 150 questions are scored and 20 are unscored pretest items being trialled for future exams. You will not know which is which, so answer every question with equal effort.
Is the RCES passing score the same as the RCIS?
Yes. Both CCI registry exams use a scaled score of 650 on a 0-900 scale, and both are 170 questions in three hours. See the RCIS passing score page for the cath lab equivalent.
What happens if you fail the RCES exam?
You can retake it after CCI’s required waiting period. The specific interval and any re-examination fee can change, so confirm the current retake policy on CCI’s site before rebooking.