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Average class size

This dataset contains data on the average class size by type of institution. The default table displays data for the latest available year. The selection can be changed to display data by year. </p><p>Data for the latest available year are preliminary. Final data will be released on 29 September 2026. </p><p>For more information, please consult the <a href=https://www.oecd.org/en/publications/education-at-a-glance_19991487.html><i>Education at a Glance</i></a> web page and the <a href=https://doi.org/10.1787/9789264304444-en><i>OECD Handbook for Internationally Comparative Education Statistics: Concepts, Standards, Definitions and Classifications</i></a>.