Creators can view a report for each course in their program to see how many students have access to the course, student progress through the course, and revenue generated by the course.
The report view for a course can be found at the top right of a course page, just under the right side of the course cover image.
For creators who sell courses separately versus selling a membership, the course reports page gives good insight into how much revenue a particular course is generating for you, as well as how many students are enrolled in it. If you want to monitor student progress through a specific course rather than your entire program, the course reports page in combination with the content access tab can help you understand an individual student's progress through a given course.
NOTE: If you are testing your course with lessons in draft mode, that completed draft lessons will not count towards progress.