The Center is dedicated to conduct comparative studies in educational achievement. Principally, it serves as the International Study Center for IEA´s studies in mathematics,science, and reading - the Trends in Mathematics and Science Study (TIMSS) and the Progress in International Reading Literacy Study (PIRLS). There are information on TIMSS 1995, 1999, 2003 and PIRLS 2001, publications, some downloads, database, benchmarking...