Bart

1. Community
2. Content Requests and Feedback
3. (1) Allow one to finish an old course (2) Issue a certificate after successfully finishing a course

Ok, thanks, I hope your input will be taken into serious consideration.

1. Community
2. Content Requests and Feedback
3. (1) Allow one to finish an old course (2) Issue a certificate after successfully finishing a course

This request has been made earlier by other users, not merely by you an me. The response of Khan then was to post a screenshot of your progress on LinkedIn. To me, this sounded like bad joke, parti...

1. Community
2. News and Updates from Khan Academy
3. Content Update: 5 newly complete science courses!

I concur with finmgammell. I pretty much lost all the Mastery points I gained in the High-school physics course. I noticed that in the Physics library the Mastery points gained from practice assign...

1. Community
2. News and Updates from Khan Academy
3. Content Update: New AP Chemistry videos and exercises, plus new in-progress science courses!

I gained a lot of mastery points in the old High-school physics curriculum, and that is now gone. The video's I watched are still listed as being watched, but the quizzes and unit tests are all set...