Students will go back to school on Tuesday in Monroe Township, New Jersey. Only one school will remain closed.
Last week, inspectors found mold in two schools there, prompting officials to close all six schools for cleaning.
All schools will re-open today, with the exception of Whitehall Elementary, where classes will resume on Wednesday.
Meanwhile, in Philadelphia, John B. Kelly Elementary will re-open on Wednesday.
Officials found mold in parts of the school last week and closed it for cleaning.
School officials say the building will be 100 percent mold free when classes resume.