I'd set up the Khan Academy as a not-for-profit in 2008, but I was doing well in my job and initially thought I could fund the Academy myself. But by 2009, I was getting so much good feedback that I told my wife that I wanted to do this full time. We had some funds to fall back on, and I knew doing this made me happy.

Some kids grasp a subject faster and race ahead to the next level, while others continue to struggle with the first. The great thing we've seen is that if you let a student take his time to master a concept, he will probably race ahead on the next one.

Education has to be more than tests and formulas.

Sal Khan Quotes