CANONSBURG, Pa. — Just two days after the statewide mask mandate was tossed out for school children, one Washington County school district has already made face coverings optional for students and staff. The Canon-McMillan School District released a memo on Sunday stating that it will be optional to wear masks in their schools starting Monday. The district says masks will still be mandatory on all school transportation services, since that is a federal mandate. The district also says they are aware of the elevated rates of COVID-19 in the area, and that masks are still recommended in schools. The state Supreme Court announced its decision on Friday but the court didn’t issue a full opinion that explains their reasoning. They upheld a lower court decision that the masking mandate, which also applies to child care facilities, is not valid because it was imposed by Democratic Gov. Tom Wolf’s acting health secretary without legal authorization. The practical impact of the decision will depend on which schools and school districts impose their own masking requirements.