From the Groups tool, you can export course groups to a CSV file.
- Go to Administration in your course’s navigation bar.
- Click on Groups.
- Click on Export.
- Select the category to which your groups belong.
- Select a single group or choose 'Select All' to export all groups to a single CSV file.
- Click Export.
Download the CSV file.
If you need a list of all participants in your course, you can export the classlist. Read the manual How do I export a list of participants from my course?