Mariposa County Unified School District Friday, March 13, 2020 Update on COVID-19 (Coronavirus) Details Last Updated: Friday, 13 March 2020 12:24 Published: Friday, 13 March 2020 12:24 View Comments March 13, 2020 - Mariposa County Unified School District Friday, March 13, 2020 update on COVID-19 (Coronavirus). View the discussion thread. back to top