Division
A division is a way to split a class group into two or more subgroups. Typical divisions include boys / girls for a Physical Education, group 1 / group 2 for language lessons or multiple subgroups to facilitate options.
The subgroups in one division always compose the complete class group.
A division with only one subgroup is invalid, as it would represent the whole class group anyway. Skolaris will display a warning if it encounters such invalid data.