If you've met many people who work on Wall Street, then you've probably noticed a trend: almost all of them come from colleges like Harvard, Yale, Princeton, and Penn. Super-elite schools account for the vast majority of hires at big banks. A new paper by Kellogg management professor Lauren Rivera examines the common the track from Ivy to investment bank. John Carney of CNBC wonders why firms behave in this way and brainstorms a few possible explanations. As someone who worked on Wall Street, I ...