Sal Khan and Amy McGrath Speak on the Newly Launched Khan World School

The Khan Academy now serves over 100 million learners. It runs its own brick-and-mortar school, the Khan Lab School. It offers tutoring at Schoolhouse.world. And now, in partnership with Arizona State University and the team behind ASU Prep Digital, Arizona State's virtual learning offering for high school students, it's standing up the Khan World Schoo…