grace corrigan, also from walnut creek, is a freshman at uc santa barbara living in an off-cam pausepartment. >> there isn't flea kiany kind mandatory testing. everyone's encouraged to get tested if they experience any symptoms. >> reporter: the campus has mandatory testing for approximately 2,000 students. quote, while we cannot mandate testing for students who are not living in campus housing, we have been working closely with the santa barbara public health department. health and human services, mark galley. galley says students traveling home who are asymptomatic or mildly symptomatic could affect somebody else. >> offset by an extraordinary understanding that institutions just don't have the resources to test everybody, every week, once a week. >> reporter: san francisco native, jack isaac, a junior at emerson college, a small, liberal arts school in boston that is conducting mandatory, weekly testing. >> came in thinking it's going to be a hassle. and then, at the end of the day, you kind of feel better knowing you tested negative every week. you get a negative result at the en