Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
Current grade in the school system.
Note that the codes to be entered in Col. 6 & Col. 8 will be generally different. For a student currently studying in class nine, the entry in Col. 6 (completed level) would be 8 but the entry in Col. 8 would be 9.