Alex Taylor

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...

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3. Update: How mastery percentage is calculated

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...

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3. Mastery challenges gone! Huge mistake!