Ahead of the University of Michigan’s commencement on Saturday, the school has trained staff volunteers in how to mitigate disruptions: a change from the usual duties of guiding guests around campus and showing them to their seats, Reuters reports.

Everyone facilitating the University of Illinois’ commencement the following weekend will have undergone similar special training. At schools like the University of Southern California and Cal Poly Humboldt in Northern California, leaders have cancelled or moved key events off campus altogether.