The Trends in International Mathematics and Science Study (TIMSS) is an international comparative study of the mathematics and science achievement of fourth- and eighth-graders in the United States and students in the equivalent of fourth and eighth grade in other participating countries.
The TIMSS study began in 1995 and is administered every 4 years. TIMSS also examines the behaviors and attitudes of students in mathematics and science. To provide comparative perspectives on trends in achievement in the context of different education systems, and school organizational and instructional approaches, TIMSS collects background information from the teachers and school administrators.
AIR’s experts provide technical and analytical support for U.S. participation in TIMSS, including consultation and management support; technical review of statistical reports, data files, and data documentation; expert analysis; technical support for the development of web-based data tools and other products; and training outside researchers to use TIMSS data files and other survey resources.