| Value | Category |
|---|---|
| 0 | Missing |
| 1 | Poor material conditions |
| 2 | Insufficient supply of necessary means |
| 3 | Teachers' living standards too low |
| 4 | School limited budget |
| 5 | Not enough room for school/insufficient desks |
| 6 | Teachers' quality too low |
| 7 | Other (specify) |
| 9 | Unknown |
| Sysmiss |