ADC Part 1 Pass Rate 2026: What the Numbers Really Say (~40% First Attempt)

The ADC Part 1 pass rate is one of the most-searched questions on the Australian Dental Council pathway — and one of the least honestly answered. Here's what the historical data actually says, why the pass rate is what it is, and what separates the ~40% who pass first time from the 60% who don't.

ADC Part 1 pass rate: the headline numbers

The ADC does not publish year-by-year pass rates publicly, but historical cohort data and candidate reporting from the last decade consistently show:

Put simply: most overseas-trained dentists don't pass on their first go. That's not a comment on their competence — it's a comment on the exam format, blueprint width and prep approach most candidates take.

Why the ADC Part 1 pass rate is only ~40%

The exam isn't tricky for the sake of being tricky. It's hard for four specific reasons:

1. It's wide, not deep. 10 subjects. 280 questions. A candidate can be brilliant at endodontics and still lose the exam on oral surgery, perio and prostho — which together carry ~40% of the marks.
2. Scenario-based MCQs punish memorisation. The typical vignette gives you a case + 5 linked questions. If you can only recall isolated facts, you're guessing on the clinical reasoning.
3. Stamina matters. 140 questions in a day, over two days, is a physical event. Candidates who've never sat a full 4-hour timed mock hit a wall on section 3 or 4.
4. Recalled question files are misleading. Many candidates prep by reading "recalled" question files from previous years. These are typically incomplete, occasionally wrong, and never reflect the current blueprint weighting.

What the 40% who pass first time do differently

Across candidate patterns and post-exam feedback, four behaviours consistently show up in first-attempt passers:

• They diagnose before they study. They don't start on page one of a textbook. They take a balanced diagnostic across all 10 subjects, rank weak subjects by weighting × accuracy deficit, and spend their first month on that priority list.
• They practise scenario-based MCQs daily. 200-400+ questions per week, not just reading. And they review the explanation for every wrong answer the same day.
• They sit full-length timed mocks before the exam. At least one, ideally two — under real conditions (same start time, timed breaks, no pausing). The 8-week study plan builds these in.
• They only book the exam when their mock scores are consistently at readiness level. Booking an exam "because it's coming up" when mock scores say "not yet" is how ~AUD $2,100 gets burned.

The economics of the ADC Part 1 pass rate

The pass rate isn't just an academic statistic — it has direct financial consequences. Each failed attempt costs another ~AUD $2,100 in exam fees, plus another 6-12 months of waiting, working on temporary visas, and delayed career progression. Structured preparation is almost always cheaper than an extra attempt.

See our full ADC Part 1 cost breakdown for the total financial picture across single-attempt and multi-attempt scenarios.

Pass rate by subject: where marks are actually lost

Candidate self-reports and diagnostic-tool aggregate data consistently show four subjects where overseas-trained dentists lose the most marks against the ADC's expected level:

If you're weak in any of the first three (which together carry ~27% of exam marks), targeted study on Australian-specific content pays off disproportionately.

Improving your personal pass probability

The framework that consistently moves candidates from "might pass" to "first-attempt pass":

1. Take a diagnostic across all 10 subjects — know your gaps before you buy anything.
2. Study the 3-4 weakest high-weight subjects first, not the ones you already enjoy.
3. 200-400 scenario-based MCQs per week, with explanations reviewed the same day.
4. 2 full-length timed mocks in the final 2-3 weeks. Don't book the exam until you're passing them.
5. Final week: review flagged questions only. No new content. Sleep.

The good news: candidates who follow this framework consistently report first-attempt pass rates well above the 40% cohort average. The exam's pass rate is a reflection of how most candidates prepare, not how hard the exam actually is.

Related guides

Understand the exam itself in our ADC Part 1 format guide, plan your prep with the 8-week study plan, and budget realistically with the ADC Part 1 cost breakdown.