There's a reason this exam became hugely important. Become a Video Lab member! bit.ly/video-lab The SAT college extrance exam is a gatekeeper of opportunity. But this wasn't always the case. Here are some sources I found useful when reporting out this piece: * The Big Test is a well known book written by Nicholas Lemann, but a few years before he published this in 1999, he wrote this piece for The Atlantic: www.theatlantic.com/magazine/archive/1995/09/the-great-sorting/376451/ * Here's the story behind the SAT overhaul: www.nytimes.com/2014/03/09/magazine/the-story-behind-the-sat-overhaul.html?_r=0 * This research paper, from Raj Chetty and colleagues, looks at the role of colleges in intergenerational mobility: www.nber.org/papers/w23618 * The SAT helps predict first-year GPA to an extent — but not for all students. We didn't include this in our video, but this piece covers the research that shows the SAT isn't predictive for a huge portion of students: www.insidehighered.com/news/2016/01/26/new-research-suggests-sat-under-or-overpredicts-first-year-grades-hundreds-thousands Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out www.vox.com. Watch our full video catalog: goo.gl/IZONyE Follow Vox on Facebook: goo.gl/U2g06o Or Twitter: goo.gl/XFrZ5H