Thoughtful, data-driven analysis is especially important when time is short.

All students and staff—regardless of age or vaccination status—should keep wearing masks as vaccine hesitancy and breakthrough infections prolong the COVID pandemic, the CDC said Tuesday.

As district leaders moved quickly to follow the CDC's call to mandate masks this school year, officials in other states declared that families will choose whether students wear face coverings.

With the Delta variant rising, the response from various state officials has been all over the map.