| Variable | Sample classification | Frequency N | Frequency% |
| Gender | Male | 2568 | 46.15% |
| Female | 2996 | 53.85% | |
| Ethnicity | Han | 4826 | 86.74% |
| Minorities | 738 | 13.26% | |
| School type | Urban school | 1127 | 22.05% |
| Country school | 4337 | 77.95% |