Preeti Varathan, writing for Quartz

Econ 101, the introductory college economics course that is often held in overcrowded lecture halls packed with half-asleep freshmen, is finally getting a facelift.

At the front of the class is Raj Chetty, a 38-year-old economist who publishes some of the field’s most intriguing papers year after year. He’s used data to debunk the American Dream, challenge the Ivies as engines of social mobility, and become an authority on inequality. He’s shuttled from top university to top university, scored a MacArthur “genius” grant, and landed on Forbes’ 40 under 40 list.

Now, at Stanford, he’s rethinking how to teach economics to a bunch of fresh-faced newbies to the field—and they’re loving it.