Classes/Groups is a function of sQuizya that allows teachers to divide and organise their students to make assigning zApps and viewing the results as simple as it can possibly be.
A teacher may have any number of Classes/Groups active at any one time, containing any number or combination of sQuizya users belonging to the same institution.
Subgroups allow for further categorising within a particular Class/Group, making targeted assigning possible.
Unlike Classes/Groups, the members of a Subgroup are unaware that they are in it.