| Value | Category |
|---|---|
| 0 | |
| 1 | Preschool 00 |
| 2 | Primary 11-15 |
| 3 | Lower Sec 21-24 Upper Sec 31-33 |
| 4 | Post secondary non tertiary 41-43 Tertiary Edu 51-57 |
| 5 | Non Formal Edu. 61-63 |
| 6 | 98 DK |
| 7 | If less than 1 grade, enter "00" |
| 11 | |
| 12 | |
| 13 | |
| 14 | |
| 15 | |
| 21 | |
| 22 | |
| 23 | |
| 24 | |
| 31 | |
| 32 | |
| 33 | |
| 41 | |
| 42 | |
| 43 | |
| 51 | |
| 52 | |
| 53 | |
| 54 | |
| 55 | |
| 57 | |
| 98 | |
| Sysmiss |