The law requires any school district that receives E-Rate funding to filter or block visual depictions that are obscene, that contain child pornography, or material harmful to minors. Schools are required to enforce the operation of such technology protection measures (i.e., keep the filter operating) during any use of such computers by minors. The law also requires districts to have in place a policy of Internet safety that includes the use of a filter or blocking procedure for district computers used by minors.