A big idea driving Khan Academy is a belief in “mastery learning”—that students should show proficiency in one set of materials before moving on to the next. The nonprofit’s latest push to make ...

Salman Khan, a graduate of the Massachusetts Institute of Technology and the Harvard Business School, was working as a hedge fund manager when he began posting videos on YouTube six years ago to tutor ...

In 2006, Sal Khan started making YouTube videos meant to help his nieces with their math homework. Since then, Khan’s video collection has grown into a huge repository of tutorials used in and out of ...

Before he started the most popular education site on the Web, Salman Khan was neither an educator nor an entrepreneur. His outsider status helps explain why he's been able to solve a problem that ...