Upper Thumb schools quickly adapt to COVID testing rules for athletes FacebookTwitterEmail Harbor Beach athletic director Troy Schelke, left, and athletics secretary Pat Terrill demonstrate the COVID-19 testing process the school, along with all other Michigan high schools, have instituted since rules requiring testing of a prep athletes took effect earlier this month. It’s been three weeks since new rules went into effect requiring high school athletes in the state of Michigan to undergo a weekly COVID-19 test to practice and compete for the remainder of the 2020-2021 school year, and area school districts have quickly adapted to the new policy.