| Value | Category | 
|---|---|
| 1 | School too far | 
| 2 | Poor school building | 
| 3 | Living standard of teachers is too low | 
| 4 | School budget constraint | 
| 5 | Not enough places/desks | 
| 6 | Not enough supplies | 
| 7 | Poor quality of teachers | 
| 8 | Not enough teachers | 
| 9 | Classes not held regularly | 
| 10 | Other | 
| Sysmiss |