If a COVID-19 test was done, what were the results? If positive, student should isolate for at least 5 days from date of symptom onset or test date, if asymptomatic. Date of symptom onset or date of test, if asymptomatic, is day 0. If symptoms are improving or gone and student has not had a fever in the past 24 hours, they may return on day 6 and wear a mask around others for 5 additional days.