Salman Khan timeline

1976: Salman "Sal" Khan is born in New Orleans to parents originally from Bangladesh and India. He attends public school in New Orleans.

1998: Khan graduates MIT with a bachelor's degree in electrical engineering and computer science. He later gets a masters degree in electrical engineering and computer science from the school, as well as an MBA from Harvard Business School.

Late 2004: Khan begins tutoring his cousin Nadia in math over the Internet. Other family members hear about the lessons, and soon, he's tutoring about 10 of them on a regular basis.

Nov, 16, 2006: At the urging of a friend, Khan creates a YouTube account, YouTube.com/KhanAcademy, and begins posting his lessons there. The videos begin attracting thousands, then tens of thousands of viewers.

Late 2009: Khan quits his hedge fund analyst job to run the Khan Academy full-time.

July 2010: Microsoft founder Bill Gates praises the Khan Academy at the Aspen Ideas Festival. The world's second-richest man says he uses the Khan Academy videos to tutor his own kids. Khan's phone starts ringing soon after, with people wanting to help him achieve the Khan Academy's goal of a free world-class education for everyone.

April 18, 2012: Time Magazine names Khan one of the 100 most influential people in the world in its annual Time 100 list.

Oct. 19, 2012: Khan Academy has delivered more than 200 million lessons, according to its official Twitter feed, Twitter.com/KhanAcademy.

Nov. 3, 2012: Forbes features Khan on the cover of the magazine for a story about "disruptors" shaking up education.