As the global leader in advancing education excellence through accreditation and school improvement, AdvancED brings together more than 100 years of experience and the expertise of three US-based accreditation agencies — the North Central Association Commission on Accreditation and School Improvement (NCA CASI), Northwest Accreditation Commission (NWAC), and the Southern Association of Colleges and Schools Council on Accreditation and School Improvement (SACS CASI).