Trends in International Mathematics and Science Study (TIMSS)

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Instrument Overview

Expert Notes AvailableView expert commentary on strengths and cautions for this instrument
Strengths

Provides internationally comparable data on students’ science knowledge and achievement.

Large, representative samples allow analysis of trends over time and across countries.

Cautions

Not aligned to NGSS and three-dimensional science learning

Focuses primarily on curriculum-based knowledge, not broader scientific skills or practices

Relies on standardized test items, which may not capture all aspects of student understanding

The Trends in International Mathematics and Science Study (TIMSS) is an international large-scale assessment that measures students’ achievement in mathematics and science at Grades 4 and 8. Conducted every four years, TIMSS compares student performance across participating countries and tracks trends over time.

In science, TIMSS assesses students’ understanding of content domains (such as life, physical, and Earth science) and cognitive domains (knowing, applying, and reasoning). In addition to achievement data, TIMSS collects contextual information from students, teachers, and schools to better understand instructional practices, curriculum, and learning environments.

TIMSS is widely used by policymakers, researchers, and education systems to inform curriculum decisions, benchmark national performance internationally, and monitor long-term trends in science education.

Content

Grades
4th Grade,
8th Grade
Other Language/s
Varies per country
Respondent
Student

Administration Information

Length
28 items

Access and Use

Price

Not indicated

Open Access
No
Use in Research

Hanushek, E. A., Peterson, P. E., Talpey, L., & Woessmann, L. (2019). The Unwavering SES Achievement Gap: Trends in U.S. Student Performance. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.3357905

Hanushek, E., Light, J., Peterson, P., Talpey, L., Woessmann, L., Broer, M., Chingos, M., Duncan, G., Ellison, G., Goldhaber, D., Klopfer, J., Mogstad, M., Murnane, R., Reback, R., Reardon, S., Shakeel, D., Singh, A., & Taber, C. (2022). FORTHCOMING: EDUCATION FINANCE AND POLICY Long-run Trends in the U.S. SES-Achievement Gap *. https://hanushek.stanford.edu/sites/default/files/publications/Hanushek%2BLight%2BPeterson%2BTalpey%2BWoessmann%20forthcoming%20EFP_0.pdf 

Iqbal, S. A., & Patrinos, H. A. (2025). Learning during the pandemic: Evidence from Uzbekistan. PROSPECTS. https://doi.org/10.1007/s11125-025-09736-w

Psychometrics (additional guidance)

Item Type
Multiple choice
Open response