Almont Community Schools issued the following announcement on Aug 26.
As a reminder for students and parents, the wearing of facial coverings on school buses is a legal mandate from the Centers for Disease Control (CDC) which applies to all public modes of transportation (such as trains and airplanes). This includes all Almont Community Schools' buses.
Information on this order can be found here: https://www.cdc.gov/quara.../masks/mask-travel-guidance.html
Original source can be found here.
Source: Almont Community Schools