The U.S. Environmental Protection Agency is providing important guidance to school administrators and maintenance personnel on how to properly maintain and manage fluorescent lighting with ballasts that contain polychlorinated biphenyls (PCBs). Many older ballasts contain PCBs that can leak when the ballasts fail, leading to elevated levels of PCBs in the air of schools. While the elevated PCB levels should not represent an immediate threat, they could pose health concerns if they persist over time. Leaking ballasts must be removed and properly disposed of along with any part of the fixture that has been contaminated with PCBs. In schools across the country, most PCB-containing fluorescent light ballasts have exceeded their life span and are beginning to leak and smoke. The guidance is part of the EPA’s ongoing efforts to address potential PCB exposures in schools.