Hernando schools to drop mask mandate at end of academic year By FOX 13 News Staff Published Testing sites across Florida closing As more people get vaccinated, the demand for COVID-19 testing has plummeted. As a result, many testing sites are either closed or will shut down soon. BROOKSVILLE, Fla. - The last day of school will also be the last day of mandatory masks in Hernando County. The school district announced today that Superintendent John Stratton recommended June 18 as the last day COVID-19 face coverings would be required for staff, students, and visitors. That's the final day of the 2020-2021 school year for the county.