| Value | Category | 
|---|---|
| 1 | At the workplace | 
| 2 | Within the university of the third century | 
| 3 | Practical classes, trainings, workshops, Seminars | 
| 4 | Lectures, instruction, conferences | 
| 5 | Distance education, courses Correspondence | 
| 6 | Private lessons, tutoring | 
| 7 | In mixed form | 
| 8 | Through self directed education | 
| Sysmiss |