It's most common in older buildings, but it can also grow in places you'd least expect, like your home or even your child's classroom. Some suspect it might be the case at Williamstown Elementary School.

"This morning, when I arrived at work, I got a telephone call from a school nurse saying that one of the principals in the school system had called her and said that a parent called and had concerns of mold in the school," says Wood County Schools Assistant Superintendent, Lawrence Hasbargen.

The West Virginia State Board of Education will now come to inspect the building, paying close attention to the basement.

"They'll be taking a look at appearance and seeing if there's any drops on ceilings. They'll be taking a look to see if there's any mold or surfaces that might have changed in color, because usually a change if color is something that gives us an essence that there might be an appearance of mold," says Hasbargen.

Mold is a very dangerous growth, especially for children with asthma or allergy problems. Those parents are especially worried.

"No, it's not safe for me to think that my grand kids are over there with all that mold and everything. He has allergies and everything else anyways, so it's definitely not good for him," says , grandmother of Williamstown Elementary student.

It might not be good for the students or staff at Williamstown Elementary, but the problem does have a solution.

So, if inspectors find mold in Williamstown Elementary School, the good news is, it can be killed with bleach or other cleaners. Keeping your child's safety a number one priority.