| Variable | Year | Supplement |
|---|---|---|
| OGDEDUCR_C | 2023 | Sample child questionnaire |
| OGDEDUCR_C | 2022 | Sample child questionnaire |
| OGDEDUCR_C | 2021 | Sample child questionnaire |
| OGDEDUCR_C | 2020 | Sample child questionnaire |
| OGDEDUCR_C | 2019 | Sample child questionnaire |
| OGDEDUC_A | 2023 | Sample adult questionnaire |
| OGDEDUC_A | 2022 | Sample adult questionnaire |
| OGDEDUC_A | 2021 | Sample adult questionnaire |
| OGDEDUC_A | 2020 | Sample adult questionnaire |
| OGDEDUC_A | 2019 | Sample adult questionnaire |