This website, located at, is owned and operated by the International Association for the Evaluation of Educational Achievement (IEA). It is maintained by the IEA teams located in Amsterdam and Hamburg.

This site is best viewed with a screen resolution of 1280×1024 or greater. Files in PDF (Portable Document Format) require use of a PDF reader program such as Adobe® Reader®, which can be downloaded from the Adobe® website.


IEA is an independent, international cooperative of national research institutions and governmental research agencies. IEA conducts comparative research and assessment projects in education worldwide.

The IEA Secretariat is registered as a foundation in the Chamber of Commerce, The Hague, the Netherlands (No. 41158871, 9 December 1994) in the name Stichting I.E.A. Secretariaat Nederland (Foundation IEA Secretariat Netherlands).

The content of the IEA website is for informational and educational purposes only. IEA is not responsible for the content of external websites, or for documents of third parties that are visibly linked to the IEA website. IEA accepts no liability for unauthorized use of the website or its content.

The IEA website and its content are copyright © 2019 International Association for the Evaluation of Educational Achievement. All rights reserved.