An IERI – International Educational Research Institute Journal
Variables' names | Description | Survey REDS code | N. observations | Possible values | Mean |
---|---|---|---|---|---|
female | Student's gender | IS1G32 | 11,957 | Binary: 1 (female); 0 (male) | 0.504 |
ses | Student's socioeconomic status. The value is provided by IEA and is based on information about the number of books at home, parents' educational level, spoken language at home, parents' employment and type of job, material goods and commodities | SES_irt | 11,825 | Continuous: overall international average of 50; standard deviation of 10 points on the scale | 50.194 (0.282) |
age | Student's age | ASDAGE | 11,965 | Continuous, ranging between 10 and 18 | 14.476 (0.011) |
lang_istr | The variable indicates if the language spoken at home by the student is the same of the language of instruction | IS1G34 | 11,743 | Binary: 1(as the language of instruction); 0 (different from the language of instruction) | 0.907 |
he_parents | The variable indicates if at least one parent has obtained a higher education degree (ISCED level 6, 7 or 8) | IS1G38 | 11,633 | Binary: 1(at least one parent with higher education); 0 (both parents without higher education) | 0.463 |