Imagine I finished studying a course and have since moved on by about 6 courses, meaning that I no longer have space for that course on the home page. Over time, I will be forgetting what I learned in that course. Therefore, I need a way to go back to that course without having to keep remembering to search for it.

What would be great is a full review quiz that is accessible directly from the home page that covers every course you have mastered. That means everything from Early Math Review all the way to Calculus and beyond.

This quiz should choose questions based on the time since you last studied them and the frequency of correct or incorrect attempts on these questions. This would mean that we could use the power of spaced practise and active recall across all of Khan Academy, ensuring that I retain knowledge from Early Math Review even when I am studying Calculus.

A one-stop revision tool for everything I have completed in Khan Academy directly on the home page that only shows me questions I currently struggle with or haven't answered for a while would be great. Look at Remnote for inspiration on how to cover multiple topics in a single quiz by the way they manage spaced repetition in their flashcards.

Thank you for considering this.