ICCS 2022 Restricted Use Data

The ICCS 2022 Restricted Use Data will only be made available upon special request by researchers. It contains all data freely available in the ICCS 2022 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. If access is granted to the applicant, 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 name Description
S_BIRTHM Date of Student Birth/Month
S_BIRTHY Date of Student Birth/Year
T_BIRTHY Date of Teacher Birth/Year
ITDATE Date of Testing 
ITDEV Administration Device/Student 
IDSTRATE  Explicit Stratum
IDSTRATI Implicit Stratum 
ITMODE_C Administration Mode/School 
ITMODE_T Administration Mode Teacher
ITMODE_SQ Administration Mode of the Student Questionnaire
ITMODE_R Administration Mode of the Student Regional Questionnaire
ITMODE_SA Administration Mode of the Student Test 















School Questionnaire

Question Variable name Description
20 IC4G20 Public or Private School
20 (derived) C_PRIVATE Public or Private School (derived)
21 IC4G21A/ IC4G21B  Total School Enrollment (Girls/Boys)
21 (derived) C_SCSIZE Total School Enrollment (derived)
22 IC4G22A/ IC4G22B Total Enrollment <Target Grade> (Girls/Boys) 
22 (derived)  C_GENROL Total Enrollment <Target Grade> (derived)