The parents of a medically fragile 6-year-old child are suing the Cumberland Valley School District in Pennsylvania to change its masking policy from masks optional back to mandatory masking for all. By permitting optional masking, the school board forces the parents of medically fragile children with disabilities into an unfair decision of keeping the child home and safe, or sending them to school and risk being exposed to COVID-19, says the lawsuit, filed in the U.S. District Court for the Middle District of Pennsylvania. Universal masking in Pennsylvania schools had been implemented by the state health department in 2020 to curtail the spread of COVID-19, but in December 2021, a court said the health department didn’t have the authority to continue requiring masking without a continued state emergency order. This put masking decisions in the hands of school boards. On Jan. 3, Cumberland Valley School Board made masking optional. But …