About Us

Welcome to SESO (Southwestern Educational Society)


SESO is a college preparatory school committed to developing competent, well-rounded students in an environment that values individual intellectual achievement. The school combines an English immersion program with modern, flexible teaching techniques and methods. Our curriculum is designed to help students develop the necessary skills needed for academic and life success.

Combined with active participation in co-curricular activities, your experiences at SESO will be exciting and rewarding. Our vast academic program provides students with a wide variety of experiences that helps them develop personal academic interests. Students are exposed to SAT training in Math and English, and Advance Placement Courses in various subjects. Our curriculum provides the tools to get into the best colleges and universities around the world, and the skills to be successful in the process of developing their professional career. Our faculty members are excellent professionals fully bilingual with distinguished academic credentials and experience. SESO is not just a school, is a lifestyle… Come and live the SESO life!!!



In 1972 it was announced that the English speaking campus at the Inter-American University in San Germán would close the following year. An international group of concerned parents started planning a new school. They wanted to create an institution with high academic standards. They also wanted to take advantage of the bilingual, cultural richness and diversity of Puerto Rico.

It was to be a school where students could interact and learn from each other in an atmosphere of freedom, tolerance and mutual respect. Southwestern Educational Society (Sociedad Educacional del Suroeste) was founded in 1973 as an independent, nonprofit organization to achieve these goals. The initials SESO have become the common name used by the community to identify our school.