Trends in International Mathematics and Science Study 2023 TIMSS 2023 marks the eighth cycle of the international mathematics and science assessment since the inauguration of the study in 1995. Providing over 20 years of trend data, TIMSS has been a valuable tool for monitoring international trends in mathematics and science achievement at the fourth and eighth grades. Like the previous TIMSS assessments, TIMSS 2023 will collect detailed information about curriculum and curriculum implementation, instructional practices, and school resources. A new feature of TIMSS 2023 will be an innovative, group adaptive design that allows for a better alignment of the assessment with the student populations in the participating countries TIMSS 2023 completes the transition to a fully digital assessment Available in Grade 4 and Grade 8 Mathematics and science, Grade 4: 14 booklets; Mathematics and science, Grade 8: 14 booklets Group adaptive design Available in digital format only paperTIMSS was administered in a small number of countries for whom the fully digital TIMSS may not be logistically feasible The next cycle of TIMSS will be administered in 2027.

TIMSS

Self-administered questionnaire

Educational tests and questionnaires

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