I love the website its simply a great place to learn I have a few ideas and wondering if Khan Academy will ever include the following.
1.Spelling and Grammar
2. Interactive online labs for example a look inside cells etc.
Also in future the possibility of a Khan Academy Highschool PDF diploma nothing fancy but something simple to say that a student or someone like me has completed the entire Highschool material on Khan Academy.
Thanks for everything and love your website.