March 12, 2020 In Health, Uncategorized School Closed March 13-30 Yellowstone is canceling classes starting Friday, March 13 through Monday, March 30. Classes will resume for all students on Tuesday, March 31 at normal time. We will send additional updates in the days to come. Yellowstone will remain closed through April 10, 2020. Click here for updates on the COVID-19 (Novel Coronavirus) outbreak »