“…Even against the current backdrop of low completion rates and study effort, estimates of the average return to college remain significantly positive, including for students at the margin of admission (Oreopoulos and Petronijevic, 2013;Zimmerman, 2014;Ost et al, 2018). How well the investment pays off, however, depends on many factors, including financial cost (Lochner and Monge-Naranjo, 2012), incoming ability , college and teaching quality (Chetty et al, 2017;Hoxby and Stange, forthcoming), and field of study (Kirkeboen et al 2016).…”