The ILSA gateway provides comprehensive information on international large-scale assessments (ILSAs) in education and includes links to numerous study-related documents and materials. The studies are conducted by a range of organisations, including the International Association for Educational Assessment (IEA), which is responsible for the Trends in International Mathematics and Science Study (TIMSS); as well as others such as the Organization for Economic Co-operation and Development (OECD), the Southern and Eastern Africa Consortium for Monitoring Educational Quality (SACMEQ), the United Nations Educational, Scientific and Cultural Organization (UNESCO), and the World Bank.