| Value | Category | 
|---|---|
| 0 | Pre-School | 
| 1 | STD 1 | 
| 2 | STD 2 | 
| 3 | STD 3 | 
| 4 | STD 4 | 
| 5 | STD 5 | 
| 6 | STD 6 | 
| 7 | STD 7 | 
| 8 | STD 8 | 
| 9 | FORM 1 | 
| 10 | FORM 2 | 
| 11 | FORM 3 | 
| 12 | FORM 4 | 
| 13 | FORM 5 | 
| 14 | FORM 6 | 
| 15 | UNIV 1 | 
| 16 | UNIV 2 | 
| 17 | UNIV 3 | 
| 18 | UNIV 4 | 
| 19 | UNIV 5 & above | 
| 20 | Government College | 
| 21 | Commercial College | 
| 22 | Village | 
| 23 | OTHER | 
| 25 | Not Stated | 
| Sysmiss |