| Value | Category | 
|---|---|
| 1 | Higher | 
| 2 | Incomplete Higher | 
| 3 | Secondary Prof. | 
| 5 | Genaral Secondary (complete) | 
| 6 | Genaral Secondary (incomplete) | 
| 7 | Elementary | 
| 8 | No elementary | 
| 9 | Illiterate | 
| 41 | Primary Prof. Technical (with Genaral Secondary) | 
| 42 | Primary Prof. Technical (without Genaral Secondary) |