Lead poisoning is the most common environmental health problem affecting young children. The most vulnerable children in schools are those in second grade and below. School maintenance workers also may be exposed if precautions aren't taken to control lead dust. They can even expose their families if lead dust travels home on their clothes. Lead damages the brain, nervous system, and kidneys.
Poisoning can occur gradually, and there are often no obvious symptoms.
Even at low levels, lead can cause learning difficulties, behavior problems, and lower IQs in children. Lead poisoning is preventable if lead-safe policies and procedures are followed. Lead paint is usually not a hazard if it is in good condition. However, lead dust may be created when surfaces are damaged or prepared for repainting. Assume surfaces that have been painted prior to 1992 have lead paint, and follow recommended lead-safe work practices.