As of July 24, 2023, SAIS has 392 member schools from 16 US states, the Caribbean, and Latin America, making SAIS the largest regional independent school association in the country. SAIS represents over 233,033 students.
Of member schools, 52% are secular and 48% are non-secular.
Total enrollment in SAIS member schools is over 233,033 students.
While 94% of SAIS member schools are coeducational, 3% are male-only and 3% are female-only.
SAIS member schools are also active in other independent school organizations:
The oldest school was founded in 1728; the newest school was founded in 2016. Median school age is 48 years.
The smallest school has 35 students; the largest has 2,550 students. Median enrollment is 477. Average enrollment is 600.