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.
+ View the TIMSS-L Full Report
CURRICULUM
QUESTIONNAIRE DATA
The TIMSS Longitudinal Curriculum Questionnaire collected information about changes in mathematics and science curricula between Grades 4/5 and Grades 8/9.
CONTEXT QUESTIONNAIRES
The TIMSS 2023 context questionnaires were updated for TIMSS Longitudinal to col- lect further information about contexts for learning math- ematics and science.
+ View the TIMSS-L Questionnaires
TECHNICAL DOCUMENTATION
The TIMSS 2023 Technical Report documented all technical aspects of the TIMSS assessment. A companion document has been created for TIMSS Longitudinal to reflect the the steps taken in defining the constructs, assessment design and sampling, instrument development, translation and verification, implementation, data collection, data cleaning, data analysis and reporting as well as database creation for public use.
+ View the TIMSS-L Publication
INTERNATIONAL DATABASE
The TIMSS Longitudinal International Database includes student achievement and process data as well as student, home, teacher, school, and national context data for the fifth and ninth grade country participants in TIMSS 2023. The public-use international database is available for research- ers to conduct secondary analyses with TIMSS 2023 data.
+ Visit the TIMSS-L Database