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Data

Average learning-adjusted years of schooling

See all data and research on:
Global Education

What you should know about this indicator

Learning-Adjusted Years of School are calculated by multiplying the estimates of Expected Years of School by the ratio of most recent Harmonized Test Score to 625, where 625 corresponds to advancement attainment on the TIMSS (Trends in International Mathematics and Science Study) test. For more information, consult the Human Capital Index website: http://www.worldbank.org/en/publication/human-capital.

World Bank variable id: HD.HCI.LAYS

Original source: World Bank staff calculation based on methodology in Filmer et al. (2018). http://documents.worldbank.org/curated/en/243261538075151093/Learning-Adjusted-Years-of-Schooling-LAYS-Defining-A-New-Macro-Measure-of-Education

Average learning-adjusted years of schooling
merge the quantity and quality of education into one metric, accounting for the fact that similar durations of schooling can yield different learning outcomes.
Source
World Bank (2024) – processed by Our World in Data
Last updated
November 4, 2024
Next expected update
November 2025
Date range
2010–2020
Unit
years

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Sources and processing

This data is based on the following sources

The World Bank EdStats database offers a comprehensive array of over 8,000 internationally comparable indicators related to education access, progression, completion, literacy, teachers, demographics, and expenditures. It covers the education cycle from pre-primary to vocational and tertiary education, including data on learning outcomes from assessments like PISA, TIMSS, PIRLS, equity data from household surveys, and educational projections up to 2050.

Retrieved on
November 4, 2024
Retrieved from
https://datacatalog.worldbank.org/search/dataset/0038480/education-statistics
Citation
This is the citation of the original data obtained from the source, prior to any processing or adaptation by Our World in Data. To cite data downloaded from this page, please use the suggested citation given in Reuse This Work below.
World Bank Education Statistics (EdStats), World Bank, 2023. Licence: CC BY 4.0.

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Citations

How to cite this page

To cite this page overall, including any descriptions, FAQs or explanations of the data authored by Our World in Data, please use the following citation:

“Data Page: Average learning-adjusted years of schooling”, part of the following publication: Hannah Ritchie, Veronika Samborska, Natasha Ahuja, Esteban Ortiz-Ospina and Max Roser (2023) - “Global Education”. Data adapted from World Bank. Retrieved from https://ourworldindata.org/grapher/learning-adjusted-years-of-school-lays [online resource]
How to cite this data

In-line citationIf you have limited space (e.g. in data visualizations), you can use this abbreviated in-line citation:

World Bank (2024) – processed by Our World in Data

Full citation

World Bank (2024) – processed by Our World in Data. “Average learning-adjusted years of schooling” [dataset]. World Bank, “World Bank Education Statistics (EdStats)” [original data]. Retrieved December 11, 2024 from https://ourworldindata.org/grapher/learning-adjusted-years-of-school-lays