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PIRLS 2026 Results

Visual presentations of results
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Study Pages

  • PIRLS 2026 Fact Sheet
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Study News

PIRLS 2021 Insights Series
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Publications

The PIRLS 2021 Insights series explores selected research topics using both reading achievement and contextual data from the study.

  • Read more about PIRLS 2021 Insights Series
Release of IDB
TIMSS 2023 Longitudinal: International Database Released
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Data release

The TIMSS 2023 Longitudinal International Database (IDB) is now available. As the first longitudinal extension of TIMSS, the study followed students from Grade 4 to Grade 5 and from Grade 8 to Grade 9. The database contains student achievement and process data, as well as contextual information at the student, home, teacher, school, and national levels collected in 2023 and 2024. Comprehensive documentation will be provided to support secondary data analyses.

Access the database here
TIMSS 2023: All Pages Now Available
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Latest additions

All thematic pages for TIMSS 2023 are now accessible on the ILSA Gateway. In addition to the assessment framework, the pages now include detailed information on the study design, international results, data, and related materials. TIMSS 2023 measured the mathematics and science achievement of fourth and eighth grade students across the 64 participating countries. It also collected contextual data from students, parents, teachers, and schools to provide a comprehensive view of educational environments. The results highlight global trends in STEM education and offer policy-relevant insights.

Access TIMSS 2023 on the Gateway
LaNA 2023 Linking Study IDB Released
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IEA and the TIMSS & PIRLS International Study Center at Boston College have released the LaNA 2023 Linking Study International Database (IDB), offering achievement and contextual data from participating education systems.

  • Read more about LaNA 2023 Linking Study IDB Released
LaNA report
LaNA 2023 Linking Study Report Now Available
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Publications

The LaNA (Literacy and Numeracy Assessment) 2023 Linking Study report is now available open-access online. Conducted by IEA and the TIMSS & PIRLS International Study Center at Boston College, the study aimed to measure basic reading and mathematics skills at the primary school level.

  • Read more about LaNA 2023 Linking Study Report Now Available

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