New England Association of Schools and Colleges (NEASC)

Founded in 1885, the New England Association of Schools & Colleges, Inc. (NEASC) is the nation’s oldest regional accrediting association and is one of the six regional agencies recognised by the US Secretary of Education to accredit schools; it serves more than 2,000 public and independent schools, colleges and universities in the six states of Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont and  American/international schools in more than sixty nations worldwide-  from pre-K to the doctoral level.

From the NEASC web site:

Accreditation of American and International Schools Abroad
American and international schools located in foreign countries are eligible to seek regional accreditation through the New England Association of Schools and College’s Commission on American and International Schools Abroad (CAISA). These schools must offer an educational program at the pre-K through grade 12 level following an American-style or international program of studies using English as the primary language of instruction. Normally, an overseas institution is expected to achieve accreditation status within three years of being granted candidacy.