How much time does it take to do the 8th grade course?

Hi silverlight574!

Thanks for sharing your thoughts on the addition of a feature that allows you to know the approximate duration of a course based on the length of the videos in it. We are always working to add features that improve our site, and we love getting input from our community.

I've passed your feedback along to the team and it will be part of our conversation as we plan the future of Khan Academy.

Thanks for helping improve Khan Academy!