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International Data Explorer
  • Explore student and adult performance on international assessments
  • Explore survey questionnaire results for thousands of variables
  • Find data for the United States and more than 80 other national and subnational education systems
  • Create tables, charts, and maps
  • Display averages, percentages, standard deviations, percentiles, and performance levels
  • Run statistical tests
  • Run regression analyses
  • Test for statistically significant gaps
Create your own analyses and explore the results from international studies...
Program for International Student Assessment (PISA)
Target Population

15-year-old students

Subjects
  • Reading literacy
  • Mathematics literacy
  • Science literacy
  • Problem solving
  • Collaborative problem solving
  • Financial literacy
Questionnaires

Student Questionnaire:

  • Student background/demographic characteristics
  • Home educational resources
  • Self-perceptions, beliefs, and attitudes about learning
  • Perceptions of teaching and instructional experiences
  • School climate and safety

School Questionnaire:

  • Policies and practices
  • Instructional time
  • School resources and technology
  • School climate and safety
  • School enrollment and characteristics
PISA logo
Need help or have suggestions?

View the IDE Brochure for a general overview of how to use the IDE tool.

View the individual study help guides for further details on using the IDEs, or use the Help Button available on the top of every page of the tool.

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

We welcome your suggestions on how to improve the IDE. Please send an e-mail to NCESinternational@ed.gov.

System requirements
  • Target screen resolution is 1024 x 768.
  • Internet Explorer 11 or higher.
  • Firefox 3.0 or higher.
  • Google Chrome.
  • Apple Safari.
  • Enable JavaScript and pop-ups in your browser.
  • Accessible version:
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Progress in International Reading Literacy Study (PIRLS)
Target Population

4th-graders

Subjects
  • PIRLS
    • Reading
  • ePIRLS
    • Online Reading
Questionnaires

Student Questionnaire:

  • Student background/demographic characteristics
  • Home educational resources
  • Self-perceptions, beliefs, and attitudes about learning
  • Perceptions of teaching and instructional experiences
  • School climate and safety

ePIRLS Student Questionnaire:

  • Student computer use
  • Self-perceptions about computer proficiency

School Questionnaire:

  • Policies and practices
  • Instructional time
  • School resources and technology
  • School climate and safety
  • School enrollment and characteristics

Teacher Questionnaire:

  • Teacher background and professional preparation
  • Attitudes/beliefs about teaching/learning
  • Instructional time and practices
  • Teacher collaboration
  • Professional development
  • School climate and safety
PIRLS logo
Need help or have suggestions?

View the IDE Brochure for a general overview of how to use the IDE tool.

View the individual study help guides for further details on using the IDEs, or use the Help Button available on the top of every page of the tool.

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

We welcome your suggestions on how to improve the IDE. Please send an e-mail to NCESinternational@ed.gov.

System requirements
  • Target screen resolution is 1024 x 768.
  • Internet Explorer 11 or higher.
  • Firefox 3.0 or higher.
  • Google Chrome.
  • Apple Safari.
  • Enable JavaScript and pop-ups in your browser.
  • Accessible version:
  • On
  • Off
Trends in International Mathematics and Science Study (TIMSS)
Target Population

TIMSS: 4th- and 8th-graders

TIMSS Advanced: students at the end of high school

Subjects
  • TIMSS:
    • Mathematics
    • Science
  • TIMSS Advanced:
    • Advanced Mathematics
    • Physics
Questionnaires

Student Questionnaire:

  • Student background/demographic characteristics
  • Student activities outside of school
  • Self-perceptions, beliefs, and attitudes about learning
  • School climate and safety

School Questionnaire:

  • Principal experience
  • School enrollment and characteristics
  • Size of staff
  • School resources and technology
  • School attendance and tardiness
  • Instructional time
  • School emphasis on academic success
  • School climate, safety, and student behaviors

Teacher Questionnaire:

  • Teacher background and professional preparation
  • Perceptions about teaching/learning
  • Instructional time and topics taught
  • Classroom characteristics
  • Teacher preparation and collaboration
  • Teacher activities outside of school
  • Role of homework
  • School emphasis on academic success
  • School climate and safety
TIMSS logo
Need help or have suggestions?

View the IDE Brochure for a general overview of how to use the IDE tool.

View the individual study help guides for further details on using the IDEs, or use the Help Button available on the top of every page of the tool.

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

We welcome your suggestions on how to improve the IDE. Please send an e-mail to NCESinternational@ed.gov.

System requirements
  • Target screen resolution is 1024 x 768.
  • Internet Explorer 11 or higher.
  • Firefox 3.0 or higher.
  • Google Chrome.
  • Apple Safari.
  • Enable JavaScript and pop-ups in your browser.
  • Accessible version:
  • On
  • Off
Program for the International Assessment of Adult Competencies (PIAAC)
Target Population

Adults in households ages 16-65 (international)
U.S. Adults in households ages 16-74
U.S. Adults in prison ages 16-74

Subjects
  • Literacy
  • Numeracy
  • Problem solving in technology-rich environments
Questionnaires

Household Background Questionnaire:

  • Educational background
  • Workplace experiences and skills
  • Occupational attainment
  • Skill use (reading, writing, math and ICT) at work and in everyday life
  • English language learners' skills (speaking, reading and writing)
  • Civic participation
  • Health behaviors and practices

Prison Background Questionnaire:

  • Educational background and education in prison
  • Non-academic programs, training, and other activities in prison
  • Workplace experiences and skills prior to incarceration and in prison
  • Skill use (reading, writing, math and ICT) at work prior to incarceration and in prison
  • Skill use (reading, writing, math and ICT) in everyday life in prison
PIAAC logo
Need help or have suggestions?

View the IDE Brochure for a general overview of how to use the IDE tool.

View the individual study help guides for further details on using the IDEs, or use the Help Button available on the top of every page of the tool.

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

We welcome your suggestions on how to improve the IDE. Please send an e-mail to NCESinternational@ed.gov.

System requirements
  • Target screen resolution is 1024 x 768.
  • Internet Explorer 11 or higher.
  • Firefox 3.0 or higher.
  • Google Chrome.
  • Apple Safari.
  • Enable JavaScript and pop-ups in your browser.
  • Accessible version:
  • On
  • Off
Teaching and Learning International Survey (TALIS)
Target Population

Teachers and principals

Subjects

TALIS is an international study of teachers, teaching, and learning environments. It does not include student assessment data.

Questionnaires

Teacher Questionnaire:

  • Characteristics of teachers and their schools
  • Induction, mentoring, and professional development
  • Teacher appraisal and feedback
  • Teacher practices and classroom environments
  • Teacher self-efficacy and job satisfaction

Principal Questionnaire:

  • Characteristics of principals and their schools
  • School leadership
  • Induction, mentoring, and professional development
  • Teacher appraisal and feedback
  • School climate
  • Principal job satisfaction
TALIS logo
Need help or have suggestions?

View the IDE Brochure for a general overview of how to use the IDE tool.

View the individual study help guides for further details on using the IDEs, or use the Help Button available on the top of every page of the tool.

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

We welcome your suggestions on how to improve the IDE. Please send an e-mail to NCESinternational@ed.gov.

System requirements
  • Target screen resolution is 1024 x 768.
  • Internet Explorer 11 or higher.
  • Firefox 3.0 or higher.
  • Google Chrome.
  • Apple Safari.
  • Enable JavaScript and pop-ups in your browser.
  • Accessible version:
  • On
  • Off
International Computer and Information Literacy Study (ICILS)
Target Population

8th-graders

Subjects
  • Computer and information literacy (CIL)
  • Computational thinking (CT)
Questionnaires

Student Questionnaire:

  • Student background/demographic characteristics
  • Frequency of ICT use for different purposes
  • Use and learning of ICT at school
  • Student views about the use of ICT

Teacher Questionnaire:

  • Teacher background and familiarity with ICT
  • Teacher use of ICT in teaching a reference eighth-grade class
  • Learning to use ICT in teaching
  • View of ICT resources at school

Principal Questionnaire:

  • Characteristics of the school
  • Principal use of ICT
  • Application of ICT in teaching and learning at school
  • Management of ICT in school

ICT Coordinator Questionnaire:

  • Position of ICT coordinator
  • ICT resources at school
  • ICT support at school
ICILS logo
Need help or have suggestions?

View the IDE Brochure for a general overview of how to use the IDE tool.

View the individual study help guides for further details on using the IDEs, or use the Help Button available on the top of every page of the tool.

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

We welcome your suggestions on how to improve the IDE. Please send an e-mail to NCESinternational@ed.gov.

System requirements
  • Target screen resolution is 1024 x 768.
  • Internet Explorer 11 or higher.
  • Firefox 3.0 or higher.
  • Google Chrome.
  • Apple Safari.
  • Enable JavaScript and pop-ups in your browser.
  • Accessible version:
  • On
  • Off