| Value | Category |
|---|---|
| 1 | No Formal Education |
| 10 | Kindergarten |
| 11 | Elementary Grade 1 |
| 12 | Elementary Grade 2 |
| 13 | Elementary Grade 3 |
| 14 | Elementary Grade 4 |
| 15 | Elementary Grade 5 |
| 16 | Elementary Grade 6 |
| 17 | Elementary Grade 7 |
| 19 | Elementary Grade not specified |
| 20 | Secondary Grade 1 |
| 21 | Secondary Grade 1 |
| 22 | Secondary Grade 2 |
| 23 | Secondary Grade 3 |
| 24 | Secondary Grade 4 |
| 25 | Secondary Grade 5 |
| 26 | Secondary Grade 6 |
| 29 | Secondary Grade not specified |
| 31 | University, 1st year |
| 32 | University, 2nd year |
| 33 | University, 3rd year |
| 34 | University, 4th year |
| 35 | University, 5th year |
| 36 | University, 6th year |
| 37 | Bachelor's Degree |
| 38 | Higher than Bachelor's Degree |
| 39 | University Level not specified |
| 40 | Lower Vocational |
| 50 | Upper Vocational |
| 60 | High Vocational |
| 61 | Teacher Training |
| 62 | Technical and Advanced Vocational |
| 90 | Other Education |
| 99 | Unknown or Not Reported |