1. Közösség
2. News and Updates from Khan Academy
3. Update: How mastery percentage is calculated

I agree that the old system gave a stronger sense of progression. Having Proficient and Mastered count the same makes the percentage simpler, but it also removes some of the motivation to go the ex...

1. Közösség
2. Content Requests and Feedback
3. Mastery challenges gone! Huge mistake!

I can understand why this would be frustrating, especially after using Khan Academy successfully in your classroom for so many years. If mastery challenges were an important part of your 3-step app...