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International Data Explorer
International Data Explorer
Do you have questions about U.S. students' knowledge and skills in comparison to their international peers?

With the International Data Explorer (IDE), you can create statistical tables and charts to help you find answers. Explore student performance in reading, mathematics, science, problem solving, and financial literacy as well as contextual data, including student demographics, instructional experiences, and school characteristics.


The PISA IDE , PIRLS IDE , and TIMSS IDE provide results for the United States, including U.S.-specific variables, and other national and subnational education systems from each study’s cycle of administration. The most recent data are from PISA 2012, PIRLS 2011, and TIMSS 2011. The results include mathematics and science achievement for 4th-graders (TIMSS), 8th-graders (TIMSS), and 15-year-olds (PISA); reading achievement for 4th-graders (PIRLS) and 15-year-olds (PISA); problem-solving achievement for 15-year-olds (PISA); and financial literacy achievement for 15-year-olds (PISA). Also included are responses to a student questionnaire about students’ background, beliefs and attitudes about learning, and school experiences (PISA, PIRLS, and TIMSS); responses to a teacher questionnaire about instructional practices, pedagogical beliefs, classroom resources, and background and training (PIRLS and TIMSS); and responses to a school questionnaire about school characteristics, policies, and resources (PISA, PIRLS, and TIMSS).

Do you have questions about U.S. adults' skills and competencies in comparison to their international peers?

Explore adult performance on literacy, numeracy, and problem solving in technology-rich environments as well as contextual data, including educational background, workplace experiences and skills, occupational attainment, and use of technology.
The U.S. PIAAC IDE  provides results from the 2012 PIAAC for the United States, including U.S.-specific variables, and other countries; the 2003 Adult Literacy and Lifeskills Survey (ALL), and the 1994 International Adult Literacy Survey (IALS). PIAAC builds on the knowledge and experiences gained from IALS and ALL, earlier international adult assessments. Results from PIAAC include (1) average proficiency levels of U.S. adults ages 16–65 in literacy, numeracy, and problem solving in technology-rich environments; and (2) responses to a background questionnaire on educational attainment, formal and informal training, employment experiences, use of information and communication technologies and literacy skills at work and outside of work, and preventative health practices.

Differences between NCES and OECD PIAAC IDEs: The PIAAC IDE is available on both the NCES and OECD websites; however, only the NCES PIAAC IDE includes U.S.-specific variables, on topics such as race/ethnicity, English language ability, and health information practices, as well as all variables that follow the national routing for analysis. The NCES PIAAC IDE also categorizes the variables into detailed subcategories and provides complete descriptions of each variable. Please note, however, that for countries other than the United States, the NCES PIAAC IDE disseminates data contained only in their public-use files, resulting in some variables being available for all countries in the OECD PIAAC IDE, but not in the NCES PIAAC IDE. Furthermore, the OECD IDE includes data for Australia and the Russian Federation, but not Cyprus; the NCES IDE includes data for Cyprus, but not Australia or the Russian Federation.

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Need help or have suggestions?

For help using the IDEs, visit PIRLS help, PISA help, TIMSS help, or U.S. PIAAC help or use the IDE help button available at the top of every page.

Find out more about the international assessments and access public use data files at IAP Publications and Products.

We welcome your suggestions for how to improve the IDE. Please send an email to