Every NCLE candidate eventually asks the same question: what percentage of people pass on their first try? The honest answer is that the NCLE first-attempt pass rate has historically run in the 60-75 percent range, but the headline number moves year to year, and what matters for your prep is not the average. It is what separates the people in the passing group from the people in the failing group.
This article walks through the trend, explains why it moves, and shows what the data implies for how you should prepare.
The Source That Matters
ABO-NCLE publishes pass rate statistics in the official Candidate Handbook and on its examination statistics pages at abo-ncle.org. That is the only number worth quoting for any specific year. Forum posts, third-party blogs (including this one), and screenshots from review-course marketing materials are not authoritative. They often cite figures that are several years stale or that conflate first-attempt pass rate with overall pass rate.
Before you make any decision based on a pass rate, go to the source. The current candidate handbook lists current cycle statistics, and ABO-NCLE typically publishes annual statistics summaries.
The Broad Trend, 2020-2026
In broad strokes, NCLE first-attempt pass rates over the past several years have:
- Stayed within roughly the 60-75 percent band for first-time candidates. The exact published figure for any given year sits inside that range.
- Shifted year to year by a few percentage points in either direction. These year-over-year movements are normal and reflect the dynamics described in the next section.
- Run noticeably lower for retake candidates than for first-time candidates. The gap is consistent across years: people who fail and then return without changing their study approach tend to fail again.
- Run higher for candidates from accredited opticianry programs than for self-study candidates. The gap is also consistent and substantial.
If you want the precise current cycle figure, pull it from abo-ncle.org. Do not rely on this article or any other secondhand summary for the exact number.
Why the Pass Rate Fluctuates
A multi-percentage-point swing year over year does not mean the exam suddenly got easier or harder. Several normal dynamics drive the movement.
1. Test Bank Refresh Cycles
The NCLE is regularly updated. ABO-NCLE periodically retires older items, introduces new ones (initially as unscored pretest questions), and refreshes the topic distribution to match current practice. Years with a major test-bank refresh tend to have slightly lower first-attempt pass rates because the question pool feels less familiar to candidates who relied heavily on older review materials. Years that are well into a stable test bank tend to settle higher.
2. Candidate Preparation Trends
The optician candidate population is not static. In years when more candidates use thorough prep (formal school, structured online question banks, full-length practice exams), aggregate pass rates rise. In years when more candidates rely on a single review book and limited practice questions, aggregate pass rates fall.
3. Population Mix
The proportion of candidates from accredited opticianry programs versus apprenticeship versus pure self-study varies year to year. Because school grads pass at higher rates, a year with a higher share of school grads naturally posts a higher headline pass rate, even if every individual subgroup performed identically to the year before.
4. State Licensure Policy Changes
When a state changes its licensure requirements (for example, requiring NCLE for first-time licensure where it did not before), the candidate pool from that state shifts. Newly required candidates who were not planning to certify often do less prep than self-motivated candidates, which can pull aggregate first-attempt pass rates down briefly.
5. External Disruptions
Exam administration was meaningfully disrupted during the 2020-2021 period. Candidates testing during that window faced rescheduling, capacity-reduced test centers, and broken study routines, which produced atypical pass rate patterns. Year-over-year comparisons that span 2020-2021 should be interpreted with that context.
The Demographic Gap: School vs. Apprentice
Across years, candidates who completed an accredited opticianry program have consistently posted higher first-attempt NCLE pass rates than candidates who came in through apprenticeship or pure self-study. The gap is large enough that ABO-NCLE has historically reported it as a meaningful subgroup difference.
Why the gap exists is not mysterious. Accredited programs cover NCLE content in a structured curriculum with embedded clinical hours and built-in repetition. Apprenticeship and self-study candidates can absolutely cover the same material (many do), but they have to actively build that structure themselves, and many do not.
The implication for current candidates is not that apprentices cannot pass. It is that apprentices and self-study candidates need to deliberately compensate for the structural advantage school grads get for free. That means:
- A structured review course (online or in-person) covering all NCLE domains.
- A question bank with several hundred items minimum, taken under timed conditions.
- At least two full-length timed practice exams in the final month.
- Active engagement with the content domains where you have less day-to-day clinical exposure (often advanced fitting topics, GP lens design, and refractive disorders for entry-level dispensers).
Retake Pass Rates
Retake pass rates have consistently run below first-attempt rates. The reason is rarely that the exam is harder the second time. It is that most retake candidates have not meaningfully changed their preparation. They re-read the same review book, re-do the same question bank, and walk in with the same gaps.
Candidates who do break the cycle and pass on a retake almost always change one or more of these:
- Diagnostic-driven study. They use the domain-level breakdown on their failed score report to focus on actual weak areas instead of restudying everything evenly.
- New question source. They add a different question bank to expose themselves to different question phrasing and traps.
- Hands-on practice. If their weakness was clinical (fitting, slit lamp evaluation, K-reading interpretation), they got more bench time.
- Realistic timed practice. They simulated the 2-hour, 125-question pace before walking back into the test center.
If you have failed once, the worst thing you can do is sign up for a retake and repeat your previous prep. Change something measurable.
What Pass Rate Trends Mean for Current Candidates
The single most important interpretation of the long-running data:
- The average is not your destiny. A 65-70 percent first-attempt rate means most candidates who actually study and prepare seriously do pass. The failing group is not random. It is heavily concentrated among under-prepared candidates and retakers who did not change their approach.
- Domain coverage matters more than total study time. Candidates who spent 40 hours but covered every NCLE domain outperform candidates who spent 80 hours all on the topics they already liked.
- Question banks beat passive reading. The candidates who pass on the first attempt almost universally completed several hundred practice questions under timed conditions, not just read a textbook.
- Year-over-year fluctuations are noise to you. A pass rate that moved from 67 percent to 71 percent does not mean the exam is now easier. It tells you nothing actionable about your specific exam form.
Strategies to Be in the Passing Group
Synthesizing what consistently separates passers from failers across years:
- Cover every NCLE domain to a baseline level. The published content outline on abo-ncle.org tells you exactly what categories appear and roughly what weight each carries. Build a study plan against the outline, not against a textbook chapter order.
- Do at least 500 practice questions before exam day. Multiple sources is better than one. Track your accuracy by domain.
- Take two timed full-length practice exams in the final 30 days. Not just question sets, but full simulation, including the clock, the no-notes constraint, and ideally a quiet room you do not normally use.
- Spend extra time on contact lens fitting math. Across years, fitting calculation items (sagittal depth, GP base curve selection from K-readings, vertex compensation) are common stumbling points for self-study candidates.
- Get clinical exposure if you can. Even a few weeks of observing or assisting with CL fittings raises your performance on application-style questions in a way that passive reading cannot.
- Sleep before the exam. Pulling an all-nighter before a 125-question, 2-hour exam predictably costs more questions than it gains.
The historical NCLE pass rate trend is not a verdict on you. It is a description of what happens when a population of candidates with very different preparation levels takes the same exam. Your job is to make sure your individual preparation matches the standard the exam tests, not to worry about where the aggregate average lands this year.