MARLBORO, MASS. (WHDH) - School bus drivers for the Marlboro Public Schools district went on strike on Wednesday. The union representing the drivers and monitors said the impact will extend to all schools in the district, including the Advanced Math and Science Academy Charter School. Officials said negotiations with the bus company stalled over affordable healthcare. “Right now, our healthcare package would only cover me and not my children,” David Friess, a bus monitor, said.