Context In 2017, the Rotman School of Management at the University of Toronto changed how it assigned class schedules to students. Their previous bidding system was stressful, time-consuming, and providing lopsided outcomes; even worse, many students received incomplete schedules. At the same time, administrators knew that they were offering too many classes, but needed data to identify the right ones to drop. Solution Rotman deployed Course Match in the Spring of 2017. The strategy-proof algorithm eliminated time and stress wasted by students under the previous bidding system. Administrative effort dropped significantly, and the demand data computed by the algorithm was a boon: the school used the data to identify classes that had low demand and occupancy. By dropping those

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