Saint Mary’s Hall is accredited by the Independent Schools Association of the Southwest (ISAS). ISAS, a member of the National Association of Independent Schools (NAIS) Commission on Accreditation, has voluntarily submitted to a rigorous and impartial review of its accreditation program and demonstrated its adherence to the Commission’s Criteria for Effective Independent School Accreditation Practices. ISAS is commended by NAIS for the quality of the Association’s accreditation program for its Member Schools.