For the years 2008, changes have been made to the groupings of the educational groups at 4-digit level. Up to and including 2007, the groups for basic school only cover 8th-10th class. As from 2008, this has been changed, implying that basic school covers pre-school class to 10th class. Simultaneously, the grouping of training courses at 4-digit front-column level is changed. The grouping at 2-digit front-column level remains unchanged.