Enable a grade level you do not use in Settings > School Settings > Grades & Levels and rename it. You can then move a year group into it, for example so students who have left stay active while they finish CAS, or assign classes to it for a course after Y13.
For school admins: set up an extra grade level for students who sit outside your usual year structure.
Enable and rename a spare grade level
Go to Settings > School Settings > Grades & Levels.
Enable a grade level that the programme does not use, such as Y10 or Y11 for the DP.
Rename it, for example to CAS or the name of your course.
Save your changes.
Keep students active while they finish CAS
Set up a spare grade level as above, for example named CAS.
Open the year group for those students and select Edit Year Group Settings.
Change the grade level to the new one and save.
Add a course after Y13
Y13 is the highest grade level for the DP. For a post-graduate course, set up a spare grade level as above, then assign the course classes to it.
Classes in a spare grade level do not transition in the way Y12 classes move into Y13 for two-year courses. Check these classes each year.