Trends in International Mathematics and Science Study

Trends in International Mathematics and Science Study (TIMSS) is an international assessment of mathematics and science at the fourth and eighth grades that has been conducted every 4 years since 1995. In 2015, the International Association for the Evaluation of Educational Achievement (IEA) and IEA’s TIMSS & PIRLS International Study Center at Boston College conducted TIMSS 2015 at fourth and eighth grades and TIMSS Advanced 2015 for students in the final year of secondary school enrolled in special STEM programs or tracks. Both TIMSS 2015 and TIMSS Advanced 2015 provided 20-year trend measures for countries that participated in the first TIMSS assessments in 1995.

TIMSS 2015 and TIMSS Advanced 2015 continue the long history of international assessments in mathematics and science conducted by IEA. IEA is ...