  We investigate the dynamics of disease infection via shared classes at Simon
Fraser University, a medium-sized school in Western Canada. Specifically, we
use simulation to examine the impact of keeping classes above a certain size
online, while those below that size are allowed to meet in person. We use
simple models for infection and recovery, as well as multiple regimes for
infectiousness and class size threshold. Graph theoretic properties of the
student-class enrollment network are also computed, and one such statistic is
used to model an important output of our simulations.
