(CBS News) Sal Khan is a math, science, and history teacher to millions of students, yet none have ever seen his face. Khan is the voice and brains behind Khan Academy, a free online tutoring site ...

In 2009, Sal Khan walked away from a high-paying job to start a business that had no way of making money. His idea to launch a non-profit teaching platform was ignited five years earlier, when he was ...

Howard University is launching an algebra course for college credit at high schools in historically underserved communities created in partnership with Khan Academy, according to an announcement today ...

"This," says Matthew Carpenter, "is my favorite exercise." I peer over his shoulder at his laptop screen to see the math problem the fifth grader is pondering. It's an inverse trigonometric function: ...

The headquarters of what has rapidly become the largest school in the world, at 10 million students strong, is stuffed into a few large communal rooms in a decaying 1960s office building hard by the ...