Orange County Schools has had filters in place since August of 1999 and the Chapel Hill-Carrboro City School Board voted to implement the filters in schools by June.
The Children's Internet Protection Act requires schools to have Internet filters in place before they can receive federal funding. The ALA and ACLU would like to see this law overturned.
Chapel Hill-Carrboro City Schools is still shopping for the right filter, and board chairwoman Valerie Foushee said she thinks filters necessary.
"As we allow more Internet access in the schools, we should protect students," she said.
Bob Stocking, director for instructional technology and media for the district, said Chapel Hill-Carrboro schools are getting bids for filters and officials are operating under the premise that the courts will uphold CIPA.
"We're going along assuming the law is the law," he said.
The Orange County school system has used filters for the past three years, and board members say they are happy with how the filters are performing.
"I think the filters we have in Orange County Schools are appropriate for the students," said Kathy Osborne, associate superintendent for the system.
"We feel they offer a benefit to students."