Washington (CNN) Usually, colleges require students to send in a deposit by May 1 in order to hold a spot in the incoming freshman class. But some schools are offering more flexibility to students as the coronavirus crisis grows.

Over the past week, more than 200 colleges and universities have said they'll push the deadline to at least June 1, according to a tally by a nonprofit group called ACCEPT (Admissions Community Cultivating Equity & Peace Today).

That includes the highly-selective Williams College in Massachusetts, Gonzaga University in Washington, and the University of Illinois at Chicago.

"There is real financial uncertainty for everyone at this moment, and May 1 seems awfully close. Having that extra four weeks to process the decision is really invaluable," said Marie Bigham, the founder of ACCEPT and a former college admissions director.