The International Association for the Evaluation of Educational Achievement (IEA) is a nonprofit independent research organization that is committed to investigating various aspects of education systems, measuring strengths, weaknesses, and trends across international contexts. More than 100 education systems across six decades have participated in large‐scale comparative studies, and this has been further supported by the collaborative network of scholars, researchers, policy analysts, and technical experts from national education research centers and government research agencies. The reports and data stemming from these initiatives have provided foundational aspects in supporting education research as well as evidence‐based policymaking.