How Bill Gates' Favorite Teacher Wants to Disrupt Education
In 2008, Sal Khan had a bright future making millions as a hedge fund manager. He gave it up to produce low-budget math films on YouTube for free. Fortunately, hidden among his millions of loyal students, were the wealthiest of educational philanthropists, Bill Gates and the Google Foundation. Now, with a whole lot of cash and even more street cred, Khan aims to demote the institution of "school" to just one of many educational options.