On Tuesday night, James Madison University sent out a stark message to its community: The threat of the coronavirus had become too great for students to remain on campus and for in-person classes to continue. Across the state, students were left wondering if their college campus would be the next to shut down.

Positive cases of the coronavirus are still rising at several Virginia colleges. On Friday, when JMU announced it had 772 total cases among students and staff, Virginia Tech announced 416, Radford University had 293, the University of Virginia had 201 and Virginia Commonwealth University had 198.

But there are more factors in a college’s decision making than just total case count. The number of isolation rooms on campus is another major factor, and JMU’s has almost run out of space. It’s also important to watch if the virus is spreading beyond campus, university and health leaders said.