TIMSS 1995, the largest and most ambitious international study of student achievement conducted up to that time, was the first cycle of assessments of trends in students’ mathematics and science achievement, now known as the Trends in International Mathematics and Science Study. Questionnaires gathered extensive information about the teaching and learning of mathematics and science from students, as well as from their teachers and school principals. The study also investigated the mathematics and science curricula of the participating countries by conducting an analysis of curriculum guides, textbooks, and other curricular materials.

TIMSS

Educational measurements and tests

Target population (students) All students enrolled in the grades representing 4 years of formal schooling respectively, counting from the first year of ISCED Level 1.

STRATIFIED TWO-STAGE CLUSTER SAMPLE DESIGN