Requires DOH to study indoor air quality at public schools, develop list of common indoor air contaminants at public schools, and establish guidance regarding potential mitigation measures.

S 1220 requires New Jersey's Department of Health (DOH) to study indoor air quality in public schools within one year of the bill's effective date. The DOH must test for specific contaminants like carbon dioxide, VOCs, and fine particulate matter across a representative sample of schools (covering diverse regions, age levels, and building ages), then compile a statewide list of common contaminants and develop practical guidance for schools to reduce or mitigate these pollutants. This guidance will be shared with the Department of Education and posted online for public access. The bill directly affects public schools by providing them with science-based tools to address indoor air quality, while requiring the DOH, DEP, and DOE to collaborate on implementation.