A group is a collection of students in a course. Outside of a course, a group has no meaning.

Groups are useful when you want to separate students studying the same course. For example, if your organization is using the same course for several different classes or groups, you can use the group feature to separate students so that each group can see only their peers in the course. For example, you can create a new group every month for employees hired that month. Then, you can monitor and mentor them together.

After you have run a group of people through a course, you may want to reuse this course for another group. You can use the group feature to separate groups so that the current group doesn't see the work done by the previous group. This will be like a new course for the current group.

You may want an activity or resource to be open to just one group of people. You don't want others in the class to be able to use that activity or resource.