Khan Academy, a one-world schoolhouse, teaches thousands of free lessons online. Jan. 3, 2013— -- Admit it, no matter how old you are, you can still remember what the bell sounded like at your ...

Tucked away in a high school chemistry classroom in Northern Indiana are pressure gauges intended to teach a fundamental principle of chemistry known as Boyle’s Law. In their place, Hobart High School ...

Forbes contributors publish independent expert analyses and insights. I focus on philanthropy, civil society, housing and the welfare state. Just eight years after its founding, Khan Academy has ...