The Trends in International Mathematics and Science Study (TIMSS) is an international comparative study of student achievement. TIMSS 2015 represents the sixth such study since TIMSS was first conducted in 1995. Developed and implemented at the international level by the International Association for the Evaluation of Educational Achievement (IEA), an international organization of national research institutions and governmental research agencies, TIMSS is used to measure the mathematics and science knowledge and skills of 4th- and 8th-graders over time.
TIMSS is designed to align broadly with mathematics and science curricula in the participating countries and education systems. The results, therefore, suggest the degree to which students have learned the mathematics and science concepts and skills likely to have been taught in school. TIMSS also collects background information on students, teachers, schools, curricula, and official education policies to allow cross-national comparisons of educational contexts that may be related to student achievement.
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