The ICILS 2023 Restricted Use Data will only be made available upon special request by researchers. It contains all data freely available in the ICILS 2023 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.
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 them 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 download the Restricted Use Agreement.
If you are residing in a country not mentioned in the above list, please download the Restricted Use Agreement.
These are the additional variables available in the Restricted Use Data:
Sampling/Tracking/Identification Variable
| Variable name | Description |
|---|---|
| SSTEACHERS | Number of teachers to sample |
| NTEACHERS | Number of teachers in target grade |
| ITBIRTHY_T | Teachers’ year of birth from tracking forms |
| ITBIRTHY_S, ITBIRTHM_S | Students’ year/month of birth from tracking forms |
| TADATE | Date of testing |
School Questionnaire
| Question Nr | Variable name | Description |
|---|---|---|
| 1A | IP3G01A | Total number of female students in school |
| 1B | IP3G01B | Total number of male students in school |
| 1A/B (derived) | P_NUMSTD | Number of students in school (School size) - derived |
| 2A | IP3G02A | Total number of female students in target grade |
| 2B | IP3G02B | Total number of male students in target grade |
| 2A/B (derived) | P_NUMTAR | Number of female and male students in target grade - derived |
| 4A | IP3G04A | Total numbers of full-time teachers |
| 4B | IP3G04B | Your School/Total numbers of part-time teachers |
| 4A/B (derived) | P_NUMTCH | Total number of full-time and part-time teachers - derived |
| 6A | IP3G06A | Public or a private school |
| 6A (derived) | P_PRIV | Public or private school - derived |
| 22 | IP3G22 | Principals’ gender |
| 23 | IP3G23 | Principals’ age |
Student Questionnaire
| Question Nr | Variable name | Description |
|---|---|---|
| 1A | IS3G01A | Students’ month of birth |
| 1B | IS3G01B | Students’ year of birth |