The moisture and humidity from weeks of rain are interfering with the start of classes this week at some Midlands schools.
At least two schools are experiencing problems with mold as the new school years gets underway.
In Richland District 2, officials say a small amount of mold was found at Pontiac Elementary School in Elgin as final preparations were being made for the first day of classes today.
So four kindergarten classes will be moved to a different part of the building until Monday while clean-up takes place.
Meanwhile, work has been underway to eradicate mold at Lugoff Elementary School in Kershaw County.
When teachers returned to the school last week, mold was found in several classrooms.
While all other schools in Kershaw County started classes on Monday, Lugoff Elementary's first day was postponed until Wednesday to allow time for cleaning the mold.