International School of San Salvador

International School of San Salvador, widely known as CISS, is a long established private international school in El Salvador founded in 1979 by Chester and Nora Stemp. The school describes its mission as developing compassionate, inquisitive, and ethical learners prepared for leadership in the global community. Located in Colonia San Benito, CISS serves a multicultural student body and emphasizes rigorous academics, a strong school climate, and integral development across physical, cognitive, and social-emotional growth. Its official materials highlight a Kinder through 12th grade academic program and position the school among the premier private educational institutions in San Salvador and Central America. Families are drawn to the combination of high expectations, diversity, and a supportive environment where students are encouraged to thrive personally as well as academically. The school also stresses inclusion and community, reflecting its international identity and long-standing presence in the capital. For parents seeking an English-medium international option with established roots in El Salvador, CISS offers a clear college-preparatory pathway supported by a globally minded educational culture.