The authors thank Charles Corbett (department editor), the associate editor, and two reviewers for instrumental comments and feedback; our research partner DonorsChoose, specifically Charles Best, Ali Rosen, Rebecca Widom, Andi Muskaj, and Barbara Cvenic; and the attendees of the 2020 Empirical Operations Workshop and INFORMS Annual Conference and seminar attendees at Carlson School of Management-University of Minnesota, Stanford Business School, and The Wharton School at the University of Pennsylvania for helpful feedback. All errors are our own.