St. Martin's is fully accredited by AIMS (Association of Maryland Schools), the governing body of 120 independent schools in Maryland and DC.
St. Martin's also has been a member of the National Association of Episcopal Schools since its inception. This puts St. Martin's in the company of more than 1,200 schools around the world whose Episcopal identities foster a welcoming faith tradition that celebrates inclusion and diversity, as well as commitment to academic excellence and service.