On August 4, 2025, the West African Examinations Council released the results of the May/June 2025 WASSCE and sent shockwaves across Nigeria's education community. The initial figures were devastating: out of 1,969,313 candidates who sat the examination across 23,554 schools, only 754,545 — representing 38.32% — obtained credit passes in at least five subjects including English Language and Mathematics. The figure marked the worst WAEC performance in over a decade, worse even than results recorded during the COVID-19 lockdown years.
Social media erupted. Parents were furious. Students were heartbroken. Education experts called it a national emergency. Then, four days later, WAEC admitted something remarkable: it had made a marking error. The corrected pass rate jumped to 62.96% — still a 9.16% drop from 2024's 72.12%, but far from the initial catastrophe. This article tells the complete story, explains what actually caused both the initial failure rate and the marking error, and — most importantly — tells 2026 WAEC candidates exactly what to do now.
THE FULL TIMELINE: FROM 38% TO 63%
The initial announcement sent Nigeria into an uproar. The Educare CEO Alex Onyia asked publicly on social media: "How can only 38% of students out of over 1.9 million that sat for WAEC score credit in English and Mathematics? Something is fundamentally wrong." The statement went viral, drawing millions of impressions within hours.
Students reported writing exams under torchlight due to power failures. Others described being kept at exam centres until midnight. In rural and under-resourced areas, conditions were reportedly dire. The combination of these logistics failures and the initial pass rate created a picture of systemic collapse that felt — to many Nigerians — representative of something much larger than one year's results.
WAEC'S MARKING ERROR — WHAT ACTUALLY HAPPENED
On August 8, 2025, Dr. Amos Dangut, Head of WAEC's National Office, held a second press briefing. His message was extraordinary: the council had discovered that a serialised code file was wrongly used in the printing of English Language Objective Tests (Paper 3), which resulted in candidates being scored using the wrong answer keys.
In plain terms: thousands of students answered their English Language objective questions correctly, but WAEC's computer marked them wrong because the question codes and the answer keys had been mismatched during the printing serialisation process. Schools that sat the exam in Computer-Based Test (CBT) mode were not affected by the error.
After fixing the English Language marking error, the pass rate for five credits including English and Mathematics rose from 38.32% to 62.96% — representing 1,239,884 candidates. The corrected figure still represented a 9.16% decline from 2024's 72.12%, meaning the underlying performance problem was real, just not as catastrophic as initially reported. Female candidates (53.05%) slightly outperformed male candidates (46.95%) in the corrected results.
THE REAL CAUSES OF THE DECLINE
Even after correcting the marking error, the 9.16% year-on-year decline in WAEC Maths + English performance is significant. There were genuine factors — separate from the marking error — contributing to lower performance in 2025:
Anti-Malpractice Serialisation — A Double-Edged Sword
For 2025, WAEC implemented paper serialisation — a system where different candidates at the same centre receive differently ordered questions, making it almost impossible to copy from a neighbour. WAEC's Dangut confirmed: "This approach drastically reduced the incidence of collusion and made examination malpractice more difficult. We observed a dip in the performance of objective papers, but essay papers remained consistent."
The implication is uncomfortable but important: a measurable portion of Nigeria's historically reported WAEC pass rates was built on examination malpractice. When cheating became harder, the true independent performance of candidates was revealed. This isn't a condemnation of students — it's an indictment of a system that allowed malpractice to inflate results for years, giving students, parents, and policymakers a false picture of actual learning levels.
Logistical Failures During the Examination
Multiple credible reports documented serious logistical problems during the May/June 2025 sitting. Students were kept at examination centres until very late into the night — some until midnight — due to delayed exam paper distribution. In many public schools, inadequate electricity forced students to write under torchlight or mobile phone torch. These conditions would measurably impact performance even for well-prepared candidates.
Underfunded Schools and Under-Qualified Teachers
Secondary school principals quoted in the press were blunt. "We need reforms and a total overhaul of the education system in Nigeria," said Titus Ugboma, a Lagos school principal. The deeper issue — inadequate mathematics teaching at SS1 and SS2 level due to shortages of qualified maths teachers — creates knowledge gaps that can't be papered over in SS3 exam preparation. Students often arrive at final-year revision with foundational arithmetic and algebra gaps they don't even know they have.
The Rogue Expo Industry
WAEC's Dangut specifically condemned what he called "organised cheating syndicates" and "rogue websites" that compose fake questions in WAEC's name to defraud students. Students who spend time and money on fake "expo" — paying for supposed leaked questions that are actually fabricated — arrive at the exam hall with neither genuine preparation nor the cheating advantage they paid for. The double cost is devastating.
TEN YEARS OF WAEC MATHS DATA — WHAT THE PATTERN SHOWS
Putting 2025 in historical context reveals that Nigeria's WAEC Maths performance has always been volatile — but the long-term trend is genuinely concerning:
The pattern from 2014 onwards shows: 31.28% (2014) → 52.97% (2016) → 59.22% (2017) → 50% (2018) → 64.18% (2019) → 65.24% (2020) → rising to 79.81% (2023) → 72.12% (2024) → 62.96% corrected (2025). The anti-malpractice measures introduced in 2025 suggest that as serialisation and CBT become the norm, results will settle at a new "true" baseline that is lower than the inflated figures of previous years.
Historical WAEC pass rates above 70% almost certainly included a significant component of malpractice-enabled performance. As WAEC moves toward full CBT administration and tighter serialisation, the "true" independent performance of Nigerian students is likely in the 55–65% range. The 2025 results, uncomfortable as they are, may be the most honest picture of actual student competence Nigeria has seen in years.
WHAT WAEC IS CHANGING FOR 2026
WAEC's head office has confirmed that 2026 will see the complete computer-based administration of WASSCE for school candidates — the full roll-out of CBT that 2025 partially piloted. This has several direct implications for 2026 candidates:
- No more paper-based objective tests. All multiple choice answers will be entered on-screen. Students unfamiliar with CBT interfaces face an additional challenge beyond the mathematics itself.
- Even tighter anti-malpractice controls. CBT makes question sharing essentially impossible — every candidate sees a uniquely randomised question order. Preparation is the only path.
- Faster result processing. Digital certificates are available within 48 hours of results release, and the marking error risk is significantly reduced when computer scoring replaces manual key-matching.
- More accurate results. The 2025 English marking error cannot occur in a fully computerised system where answer keys are embedded digitally at the point of question delivery.
The message for 2026 is unambiguous: genuine preparation is no longer optional. The shortcuts that may have helped students in previous years are gone. What remains is the mathematics — and your ability to do it.
YOUR ACTION PLAN AS A 2026 WAEC CANDIDATE
If you are preparing for WAEC 2026, here is a concrete, evidence-based action plan built around what the 2025 results revealed about where students are actually losing marks:
1. Start with Arithmetic Fluency — It Underlies Everything
WAEC's mathematics paper tests computational accuracy under time pressure. Students who struggle with basic mental arithmetic — fast multiplication, division, percentage calculations, fraction operations — spend so long on routine calculations that they don't have time for the higher-order questions. Arithmetic fluency is the foundation. Build it first, with daily timed practice.
2. Focus on the High-Frequency Topics
Number and numeration, algebraic expressions, equations and inequalities, plane geometry, and mensuration appear in every single WAEC mathematics paper without exception. Master these completely before spending time on less frequently tested topics. Statistics, probability, and circle theorems are also high-yield for the essay section.
3. Practice Past Questions Under Exam Conditions
WAEC's question format is consistent from year to year. Students who work through past papers from 2018–2024 develop an understanding of how WAEC frames questions that is worth more than any single topic revision session. Do past papers timed — 2 hours 30 minutes for the essay, 1 hour 30 minutes for the objective. Anything less is not exam preparation; it's leisurely reading.
4. Build CBT Comfort
If your school has access to any CBT practice platform, use it. The interface of answering on-screen while managing time is a learnable skill. Students who are unfamiliar with CBT can lose 10–15 minutes of exam time to interface confusion alone.
Every year that WAEC tightens anti-malpractice controls is a year that genuinely prepared students gain a larger competitive advantage. When 40% of candidates were cheating, honest students competed against inflated scores. When anti-malpractice measures work, preparation becomes the only differentiator. The 2026 exam favours students who have built real mathematical fluency — and that process starts now, not in April.
THE BOTTOM LINE
The 2025 WAEC results — both the initial shock and the corrected figures — tell one consistent story: Nigeria's mathematics education system produces genuine competence in well-prepared students and exposes devastating gaps in underprepared ones. The elimination of malpractice shortcuts means that in 2026, those two groups will be clearly separated by their results.
Which group you are in is not determined by intelligence or natural talent. It is determined by the quality, consistency, and specificity of your preparation — starting today.