Groupings FAQ
From MoodleDocs
What is a grouping?
A grouping is a collection of groups. Groups normally exist within a grouping, but it is possible to create a group which doesn't belong to any grouping.
What is the difference between a group and a grouping?
Why does a graded activity assigned to a particular grouping only appear in the gradebook for all users?
The gradebook does not currently consider group members only functionality. (See MDL-13868 for details.) It is recommended that separate courses are used instead.
See also
- Using Moodle Groups forum