All students in third grade and above will be required to wear face masks in some situations in West Virginia when schools reopen Sept. 8, Gov. Jim Justice announced Friday in a shift from his earlier standards.

Schools will have different reopening criteria based on a color-coded system dependent on the spread of COVID-19 in a county. Justice’s previous standards did not require students at schools in the green zone to wear face masks in any situation. The updated standards, however, will require students in grades three or higher at those schools to wear masks on busses and in congregant settings in which social distancing cannot be maintained.