What Is a Good ADAT Score? Percentile Guide for Residency Programs

Every cycle, the same question lands in our inbox: is my score good enough? The honest answer starts with a fact many candidates never hear. The Advanced Dental Admission Test has no passing score. It's a 200 to 800 scale, and "good" is defined entirely by the programs on your list. This guide gives you the real numbers, the specialty context, and the caveats that forum threads consistently get wrong.

How the Scoring Actually Works

Your score report shows four scores: the ADAT Overall, Biomedical Sciences (BIO), Clinical Sciences (CLI), and Data, Research Interpretation and Evidence-Based Dentistry (DRI). All four live on the same 200 to 800 scale.

The reliability numbers matter more than most candidates realize. The Overall score carries a reliability of .94, the strongest of the four. BIO sits at .88, CLI at .81, and DRI at .79. Translation: the Overall is the most stable, most trustworthy number on the page, and it's the one programs should weigh most heavily. Because it blends all three sections, it also smooths out one weak section on one bad morning. A single section score can wobble. The Overall rarely lies. All four scores are reported in the same 10-point increments, so the finest distinction the scale can draw is 10 points. When a program director scans your report, the Overall is the headline; the section scores are the supporting detail.

The 2025 Norms, Translated Into Percentiles

The 2025 norming sample included 1,318 examinees, with a mean Overall score of 500.8 and a standard deviation of 92.4. Here's how the scale breaks down in percentile terms. A 400 sits around the 15th percentile, below most program comfort zones. A 500 sits at the 49th percentile, solidly average and competitive at many programs. A 550 lands at the 71st percentile, strong enough to stand out in most applicant pools. A 600 hits the 89th percentile, top-decile territory where doors start to open. A 650 reaches the 96th percentile, a genuine differentiator. A 700 is the 99th percentile, the ceiling of what most programs see in a given cycle.

A standard deviation of 92.4 makes the middle of the curve wide. A 600 sits roughly one standard deviation above the mean; a 400 sits roughly one below. That's why the climb from 500 to 550 moves you 22 percentile points, while the climb from 650 to 700 moves only three.

Three caveats before you build a plan around these numbers.

• Percentiles are not on your score report. They are published each September in the ADAT User's Guide, months after most candidates test.
• Percentiles are not comparable across years. Each table describes that year's cohort only.
• Forum folklore about percentiles dropping is a year-mixing error. Candidates compare a percentile from one year's table against a friend's from another year and panic. The scale did not move. The comparison was never valid.

The right way to use these numbers: find your score, read the percentile, and hold it loosely.

The Bands That Actually Matter

Strip away the noise and the working consensus lands here. For most US residency programs, 500+ is competitive. You sit at the national mean, and the rest of your application can carry real weight. 550+ is strong. You're ahead of roughly seven in ten examinees, and program directors notice. 600+ is doors-open territory. At the 89th percentile, the score stops being a question and becomes an asset.

Canada plays a tougher game. For advanced-standing tracks, 600+ is the practical bar, and 650+ is where you're genuinely competitive at the most selective programs. We see this every cycle: Canadian applicants need to aim a notch higher than their US counterparts for the same level of competitiveness.

Notice what's not on this list: a minimum. Programs don't publish cut scores, because the ADAT is one input among many. Use these bands against your practice results, not your hopes. If your timed mock scores sit at 520, plan around a 520 outcome and close the gap before you book. Wishful targeting is how candidates end up with a visible 480 they never intended.

It Depends on the Specialty

Specialties don't weigh the ADAT equally, and the differences are stark.

Endodontics has the fastest ADAT adoption of any specialty. Programs added hard requirements in the 2025-2026 cycle, and the specialty now treats the score as a serious screen. One 650+ scorer in our community landed 8+ endo interviews. The score opened those doors; the interviews decided the rest. The story repeats across cycles: a strong score earns the interview; it does not answer the interview questions.

Orthodontics holds the most required-list entries of any specialty. If ortho is the goal, treat the ADAT as a non-negotiable line item.

Oral and maxillofacial surgery is the exception. OMFS runs on the CBSE, not the ADAT. Don't let anyone sell you ADAT prep for an OMFS application.

Pediatric dentistry gives the score the lowest weight. A 2021 study found minimal association between ADAT scores and matching in pediatric dentistry. Letters and clinical fit dominate that specialty. The pattern across all four specialties: the more a field leans on objective academic metrics, the more the ADAT weighs.

For the application-side view, see our guide on when the ADAT matters in residency applications.

The Visible-History Caution

Here's the part nobody tells first-timers: every attempt is reported to every program you send scores to. Your full testing history travels with each send. A weak score is permanent. The committee member reading your file sees one line per attempt, oldest to newest. You want that list to be short and boring.

Programs are advised to use your most recent result, but the earlier attempts stay printed on the page. This is why taking the ADAT for practice can hurt you. A 430 you never meant to keep becomes part of the story every committee reads. If you're not ready, don't sit. Our ADAT retake policy breakdown covers the full rules.

Does the Score Even Predict Anything?

Yes, and the evidence is stronger than skeptics assume. The Overall score correlates .64 with dental school GPA and .60 with class rank (DeSantis 2018). A 2024 ADA analysis found that examinees with a GPA above 3.5 score about 1.2 standard deviations higher. The Advanced Dental Admission Test is measuring something real about academic horsepower, which is exactly why programs trust it.

It also means the score is trainable. Candidates who work through a large, explanation-rich question bank and review every miss systematically move their numbers. That is the design behind our ADAT practice tests, and our how hard is the ADAT guide breaks down what the work feels like. The candidates who gain the most treat every miss as data: log it, card it, and revisit it until it stops being a miss.

A good ADAT score is a competitive score. 500+ keeps you in the conversation. 550+ makes you strong. 600+ opens doors, with Canada one rung higher at each step. The score is a door-opener, not a deal-closer; interviews, class rank, and letters still dominate final decisions. Sit only when you're ready, then let the rest of your application finish the job.