TIMSS 1999, also known as TIMSS-Repeat, was the second administration of IEA’s Third International Mathematics and Science Study. The assessment was designed to provide trends in eighth grade mathematics and science achievement in an international context.
The 1999 assessment measured the mathematics and science achievement of eighth-grade students (ages 13 and 14 years) and collected extensive information from students, teachers, and school principals about mathematics and science curricula,
TIMSS
Educational measurements and tests
Target population (students)
All students enrolled in the grades representing 8 years of formal schooling respectively, counting from the first year of ISCED Level 1.
STRATIFIED TWO-STAGE CLUSTER SAMPLE DESIGN