Khan Academy is a non-profit educational organization that provides free online courses, lessons, and practice tests. The organization was founded in 2008 by educator Salman Khan with a goal to create a set of online tools that help educate students. Khan Academy offers courses in math, science, computer programming, history, art history, economics, and more. The organization has over 18 million registered users and has delivered over 1.7 billion lessons. Khan Academy is headquartered in Mountain View, California.