The ICILS 2018 Restricted Use Data will only be made available upon special request by researchers. It contains all data freely available in the ICILS 2018 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 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.
These are the additional variables available in the Restricted Use Data:
Sampling/Tracking/Identification Variable
| Variable name | Description |
|---|---|
| MODEA_CoQ / MODEA_PrQ | Administration mode school |
| MODEA_TcQ | Administration mode teacher |
| STEACHERS | Number of teachers to sample |
| NTEACHERS | Number of teachers in target grade |
| ITBIRTHY_T | Teachers’ year of birth from tracking forms |
| ITGENDER | Teachers’ gender |
| ITBIRTHY_S, ITBIRTHM_S | Students’ year/month of birth from tracking forms |
| ITGENDER | Students’ gender |
| TADATE | Date of testing |
School Questionnaire
| Question Nr | Variable name | Description |
|---|---|---|
| 8A | IP2G08A | Public or private school |
| 8A (derived) | P_PRIV | Public or private school - derived |
| 3A/B | IP2G03A/IP2G03B | Total school enrollment |
| 3A/B (derived) | P_NUMSTD | Total school enrollment - derived |
| 4A/B | IP2G04A/IP2G04B | Total enrollment <target grade> |
| 4A/B (derived) | P_NUMTAR | Total enrollment <target grade> - derived |
| 4A/B | IP2G06A/IP2G06B | Total number of full-time and part-time teachers |
| 6A/B (derived) | P_NUMTCH | Total number of full-time and part-time teachers - derived |
Student Questionnaire
| Question Nr | Variable name | Description |
|---|---|---|
| 1A/B | IS2G01A/B | Students’ date of birth (month, year) |
| 7A/B | IS2G07A/B, IS2G08A/B | Parent / guardian 1’s job (open-ended) |
| 11A/B, 12A/B | IS2G011A/B, IS2G012A/B | Parent / guardian 2’s job (open-ended) |