The Southern Association of Independent Schools (SAIS) is a U.S.-based voluntary organization of more than 340 independent elementary and secondary schools through the South, representing more than 180,000 students. SAIS represents schools in 11 Southeastern states and serves as a regional accrediting association, working independently of and in conjunction with the Southern Association of Colleges and Schools (SACS). The SAIS is a member of the National Association of Independent Schools.