Sick child to school

As long fever, sore eyes, or coughing with phlegm I will keep at home. Normal flu cough still send to school. Its so common that they get it almost every few weeks, where got enough leave to take to keep at home? Not everyone is blessed with helpers, caregivers etc to take the kids while we work. Not everyone is blessed with good bosses who are ok for you to take leave every few weeks just because you cannot send kids to school due to flu cough.