Like other universities, though, Harvard promised to bring the classes of 2020 and 2021 back to celebrate at some future date.
Some universities plan to hold their commencements in outdoor stadiums. Notre Dame, which was aggressive about bringing students back to campus last fall, is planning to accommodate all 3,000 graduates and a limited number of guests in its 79,000-seat stadium. Health officials have authorized the use of up to 20 percent of the seating.
The University of Southern California will hold in-person ceremonies for the classes of 2021 and 2020 in May. The ceremonies will take place at the Los Angeles Memorial Coliseum and graduates will be allowed to invite two guests, although they must be California residents.