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January 28, 2021 In the fall of 2019, months before the coronavirus pandemic hit, an average Cornell student interacted with about 530 peers in classrooms each week. Through courses alone, more than 90% of students were linked by three or fewer degrees of separation. A year later, in the midst of the pandemic, the university’s “small world” enrollment network looked very different – smaller, less connected and more fragmented, according to a new analysis by Cornell sociologists. Less than half of all enrolled students took an in-person class in the fall of 2020, they found. Of those, the average student saw just 65 others in classrooms each week. The share of students connected indirectly through in-person classes dropped to 55%. And ties among students were more often with others in the same field of study.

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