
Its resources cover preschool through early college education, including math, grammar, biology, chemistry, physics, economics, finance and history. Khan Academy believes learners of all ages should have unlimited access to free educational content they can master at their own pace. Today Khan Academy has more than 100 employees in Mountain View, California. So many people watched the videos that eventually Khan quit his job at a hedge fund and pursued Khan Academy full time. Khan's cousin was struggling with math, so he tutored her remotely and posted educational videos on YouTube.

Khan Academy started as a passion project in 2004.

Salman "Sal" Khan is the founder and chief executive officer of Khan Academy, a not-for-profit with a mission of providing a free, world-class education for anyone, anywhere.
