I would lime to know the answer to this as well. Also curious if there is any “proof” that can be used to show completion for school. We are not looking for course credits of any kind, just to move on to the next level in school by showing that a subject was completed here.

Same question here. There is no overall progress indicator / percentage / score. There should be some central page showing for example "51% of All Math Courses completed", ideally with a percentage breakdown by course/unit. Currently the site's organization is quite a mess

I just completed pre-algebra course at 99% mastery. It would be nice to have some confirmation from Kahn like "Congratulations, you have completed this course with 99% mastery”... or something like that! I notice that many other comments of the same issue in the topic of course completion.