TIMSS 2023 Longitudinal Study
The TIMSS 2023 Longitudinal Study International Results (TIMSS-L), an optional extension of TIMSS 2023 explored student learning gains over one year of schooling. Countries participating in the TIMSS 2023 Longitudinal Study re-assessed their original sample of TIMSS 2023 students for a second time in 2024, to create two data points of student achievement. The TIMSS 2023 Longitudinal Study provides the same group-level achievement data as TIMSS 2023 and allows a closer look into individual learning gains over time.
TIMSS 2023 Longitudinal
Results Highlights
CURRICULUM
QUESTIONNAIRE DATA
The TIMSS 2023 Longitudinal Curriculum Questionnaire collected information about changes in mathematics and science curriculum between Grades 4-5 and Grades 8-9. The data are presented as an appendix to the TIMSS 2023 Longitudinal International Results.
CONTEXT QUESTIONNAIRES
The TIMSS 2023 context questionnaires were updated for TIMSS 2023 Longitudinal to collect further information about contexts for learning mathematics and science.
Technical Report
The TIMSS 2023 Longitudinal Technical Report documents the methods and procedures for the 2024 data collection and the joint analysis of the 2023 and 2024 results conducted for the TIMSS Longitudinal Study.
INTERNATIONAL DATABASE
The TIMSS 2023 Longitudinal International Database includes student achievement and process data along with student, home, teacher, school, and national context data collected in 2023 and 2024. Extensive data and documentation are available to support secondary analyses by researchers.