School buses are pulling double duty in one Tennessee community.
Cumberland County Schools are selling ad space on the side of the school buses.
Currently, about 40 ads bring in $10,000 to the county's transportation department.
The money is used to pay for transporting kids to after school tutoring programs, focusing on the homeless population.
According to CNN, the county has the highest number of homeless children in the area.
State law allows for ads on school buses that meet a certain criteria, such as no alcohol, tobacco or religious content.