To make changes to an existing course in Schoolrunner, use the Quick Search to find the course and navigate to its page. Then select "Edit".
From this screen, you'll be able to make various changes to the course.
Beware of changing the course name if the course is synced from your SIS. Changes to the name can throw a wrench into the Schoolrunner sync and create duplicate courses!
This screen is where you can add or remove sections that are linked to the course. Sections are groups of students who are all enrolled in the same course. Multiple sections can be enrolled in a single course. If a student has assessment results for this course but doesn't have a grade for it, it may be caused by him/her not being enrolled in a section that's linked to the course. This is the place to rectify that.
Learn more about the other fields here.