Governor Tom Wolf to announce later Tuesday that masks will be required in all public and private schools starting Sept. 7 HARRISBURG- Masks will be required in all Pennsylvania K-12 schools, Gov. Tom Wolf is set to announce later Tuesday, reversing course amid a statewide COVID-19 resurgence that is filling hospital beds just as students return to class. The state Department of Health order will take effect Tuesday Sept. 7--the day after Labor Day--and will require students, teachers and staff to wear masks when inside, according to two people briefed on the plan....