TIMSS 2019 Restricted Use Data

The TIMSS 2019 Restricted Use Data will only be made available upon special request by researchers. It contains all data freely available in the TIMSS 2019 Public Use Data, plus the additional variables listed below.

Researchers who want to use the additional data below need to formally apply and provide reasoning why they would need the additional data. They need to agree not to disclose any individuals.

Application procedure

If you are interested in working with the Restricted Use Data, you will need to apply using the IEA Restricted Use Data Application Form. In addition, you need to sign the Restricted Use Agreement. Please download, complete, and sign both the application form and the agreement and send it to data@iea-hamburg.de.

The application will be reviewed by IEA staff, who will decide upon access to the data. Applicants will get feedback within 3-4 weeks. In case access is granted to the applicant, the IEA will provide details on how to access the restricted-use data.

If you are residing in one of the following countries Andorra, Argentina, Austria, Belgium, Bulgaria, Canada (commercial organization), Croatia, Czech Republic, Denmark, Estonia, Faroe Islands, Finland, France, Germany, Greece, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Israel, Italy, Japan, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, New Zealand, Norway, Poland, Portugal, Republic of Cyprus, Republic of Korea, Romania, Slovakia, Slovenia, Spain, Sweden, United Kingdom, or Uruguay, please click here to download the Restricted Use Agreement.  

If you are residing in a country not mentioned in the above list, please click here to download the Restricted Use Agreement

Additional variables available in Restricted Use Data

Sampling / Tracking / Identification Variables

Variable  Label
ITBIRTHM Date of Student Birth\Month
ITBIRTHY Date of Student Birth\Year
ITDATE Date of Testing
ITDEV Administration Device
ITMODE Administration Mode/Data Source








School Questionnaire

Question Label
1 Total enrollment of students
2 Total enrollment of <GRADE> students





Student Questionnaire

Question Label
2A Date of Student Birth\Month
2B Date of Student Birth\Year
Additional files available in Restricted Use Data

Under the umbrella of Restricted Use Data, IEA provides the TIMSS 2019 log file data. The structure of the log file data is very different from the regular TIMSS data. In the regular TIMSS data, there is one record per respondent. The log file data has one record for each answer given or changed and one record for each login, navigation, or tool use event. Each record is timestamped so that one can trace exactly when an answer was given or changed, or when an event was triggered.

There is one small limitation: for privacy reasons and to ensure the confidentiality of the item material, the data has been modified so that respondents cannot be linked to data from other sources, and the test items used cannot be reconstructed from the information in the log file data.