| Value | Category | 
|---|---|
| 1 | No education | 
| 2 | Pre-school | 
| 3 | Adult education only | 
| 4 | Primary 1 - 4 | 
| 5 | Primary 5 - 8 | 
| 6 | Form 1 - 4 | 
| 7 | Form 5 - 6 | 
| 8 | Diploma course/university degree | 
| 9 | Course after primary | 
| 10 | Course after secondary | 
| 11 | Course after form VI | 
| 12 | Other certificate |