PISA Scores By Country

PISA, the Programme for International Student Assessment, is administered by the OECD every three years to 15-year-olds in 81 countries. It does not test curriculum knowledge. It tests whether students can apply reading, math, and science skills to real-world problems. Scores are scaled to an OECD average of roughly 500, and a 30-point difference between two countries translates to approximately one year of schooling.

The range in the 2022 results is enormous. Singapore leads at 560, more than two standard deviations above the mean. At the other end, Cambodia scores 347, Philippines 356, and Uzbekistan 355. The gap between Singapore and Cambodia is 213 points, the equivalent of roughly seven years of schooling. Between those extremes, the dataset splits into tiers: a handful of East Asian systems at the top, a broad European and Anglophone middle, and a cluster of lower-income countries in South America, Southeast Asia, and North Africa at the bottom.

The 2022 results also capture the first global snapshot of COVID's impact on education. Across all participating countries, the average math score fell by roughly 15 points compared to 2018, the largest single-cycle decline in PISA history. But the pandemic did not hit equally. Jordan fell 57 points. Iceland lost 34. Meanwhile, Taiwan gained 16 and Japan added 13. The OECD itself noted that school closure duration did not predict which countries declined the most, suggesting the pandemic exposed structural differences that predated it.

Singapore scored 560 on the overall PISA assessment, 25 points clear of second-place Macau and more than two standard deviations above the global mean. That makes it the only statistical outlier in the entire dataset. In math specifically, Singapore's score of 575 is the highest any country has achieved in any single domain.

What makes this more than just a ranking fact is what it looks like at the student level. According to the OECD, Singaporean 15-year-olds are the equivalent of three to five years of schooling ahead of their global peers. The country also has the highest proportion of "academic all-rounders," students who score in the top performance band across all three subjects simultaneously.

The more interesting comparison is not Singapore vs. Cambodia. It is Singapore vs. the rich countries that spend more and get less. Qatar (422) and the United Arab Emirates (427) have among the highest GDP per capita figures in the world. Both score well below the OECD average. The United States, the world's largest economy, scores 489, 27 points behind Estonia, a country with a fraction of America's education budget.

Singapore's Ministry of Education attributes the results to systemic resilience: strong teacher-student relationships, an emphasis on applied problem-solving over rote memorization, and the deliberate integration of critical thinking across the curriculum. The evidence supports at least part of that framing. Students in Singapore's bottom socioeconomic quartile score above the overall OECD average across all three subjects. No other country in the dataset can make that claim.

For a generation of education reformers, Finland was the answer. The country topped the very first PISA rankings in 2000 and held a top-five position through 2006. Its formula seemed clear: highly trained teachers, minimal standardized testing, no tracking of students into ability groups, and an ethos of equity over competition. Entire education systems were redesigned around what became known as "the Finnish model."

The 2022 results tell a different story. Finland scored 495, a 21-point decline from its 2018 score of 516.3, and the fall has been continuous: Finland has dropped in every PISA cycle since 2006. It now sits below Canada (506), Ireland (504), and Estonia (516), the last of which has quietly adopted many Finnish principles while avoiding Finland's recent missteps.

What happened? Researchers at the University of Jyväskylä point to a cluster of factors. A 2016 national curriculum reform shifted Finnish schools toward greater student autonomy and self-directed learning, an approach that appears to work for high-performing students but leaves weaker students without enough structure. The adoption of open-plan school layouts has been linked to increased distraction. The performance gap between socioeconomically advantaged and disadvantaged Finnish students has widened, eroding one of the system's signature strengths.

Digital devices may compound the problem. Finnish students report one of the highest rates of classroom digital distraction in the OECD, with a significant number saying that other students' device use undermines their ability to concentrate. The irony is difficult to miss: a country once praised for minimal testing and maximum trust is now struggling with the consequences of giving students too much freedom too early.

The country that best embodies what Finland used to represent is Estonia. With an overall score of 516, Estonia ranks 7th globally and 1st in Europe, ahead of every Scandinavian country, every Western European power, and every Anglophone nation. It has climbed steadily since its first PISA participation in 2006 while most European peers have drifted sideways or declined.

Estonia achieves this with per-pupil spending well below the OECD average. It is not a wealthy country by Western European standards: its GDP per capita is roughly a third of Switzerland's. What it does differently is structural.

Every teacher in Estonia is required to hold a master's degree, and teachers are given significant autonomy over curriculum design, teaching methods, and materials. Education is free and comprehensive from pre-school through university, and the system provides school meals, textbooks, and transport at no cost. There is no tracking of students into ability groups until age 16. The result, according to the OECD, is one of the smallest performance gaps between advantaged and disadvantaged students in the world.

Estonia is also one of the most digitally integrated education systems anywhere. The country began embedding technology in classrooms in the late 1990s, using platforms like eKool and Stuudium for learning management. But digital literacy is treated as a cross-curricular skill, not a substitute for instruction. This stands in contrast to Finland, where digital device use in classrooms has become a cited source of distraction.

The overall rankings tell one version of this story. But PISA does not test one skill. It tests three, and the results diverge in ways the composite score hides.

Every country in the top six for math is in East Asia. Every one. Singapore leads at 575, and the next five slots belong to Macau, Taiwan, Hong Kong, Japan, and South Korea. But in reading, that dominance cracks. Ireland (516) ties with Japan for second place. Estonia (511) and Canada (507) both outperform Macau and Hong Kong. East Asia's math advantage over Europe is roughly 50 points. Its reading advantage is closer to 25.

The United States illustrates the split more clearly than any other major economy. It scores 504 in reading, good for 9th overall, a position that puts it in the same tier as New Zealand and Australia. In math, the US drops to 465, placing 34th, behind Latvia, Vietnam, and Hungary. That is a 39-point gap between its best and worst subject, one of the largest subject splits for any developed country.

Japan shows the reverse: 536 in math, 516 in reading, a 20-point advantage in the quantitative domain. The structural reasons are debated, but researchers point to the emphasis on math drilling and problem-solving practice in East Asian schooling systems, combined with the additional challenge of testing reading comprehension in languages with complex character sets.