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Learning-adjusted years of school are calculated by multiplying the estimates of expected years of school by the ratio of most recent harmonized test scores to 625.
As of 2020, Singapore ranks first with 12.8, followed by South Korea (11.6) and Canada (11.6).
Across 151 countries and territories, values run from 12.8 (Singapore) to 2.2 (Liberia), with a median of 8.0.
By region, the top 10 is made up of 5 from Europe, 4 from Asia and 1 from the Americas.
Source: World Bank Open Data — Learning-Adjusted Years of School, Male, 2020. Unit: indicator value.
Source: World Bank Open Data — Learning-Adjusted Years of School, Male · CC BY 4.0 · fetched Oct 17, 2026