I met two FB engineers a few years back. They seemed average, at most. But one quality stuck out (we spent half a day together at an event): They seemed to be excellent at following company rules.
That's what top schools teach you - conform 100% to the assignment requirements or there is no A/A+ for you. Also, most companies "get what they measure", so figuring out which metrics are visible and preferred is the way to go in large corps.
