My understanding is that many of the International Schools (such as those mentioned), also the International School of Sosua, St. Michael's in SD, St. George in SD, Santiago Christian School would offer this for their students. These schools are registered with associations like SACS (Southern Association of Colleges and Schools), WASC ( Western), or NEASC (New England). As long as those schools maintain accreditation with the college board, the opportunities to write SATs happen twice per year. Some schools in the private sector may also have made arrangements for students to write SATs or TOEFL.