True to its vision of developing learners to become excellent in academics and values and who are equipped with the skills needed to make students locally and globally competitive, SISC forms linkages with foreign and local academic and private institutions.

1. Western Association of Schools and Colleges (W.A.S.C.), U.S.A for Basic Education (K-12)
2. International Baccalaureate (I.B.) Authorized World School
3. The first and only school in the Philippines to achieve Gold Accreditation of Investors in People (IIP – United Kingdom) without going through Silver accreditation
4. ISO 9001-2000 certified by TUV Rheinland

• Southville Global Education Network (SGEN)
• Association of International Researchers (AIR), Florida, U.S.A.
• Asian Association of Human Resource Management and Development Practitioners Incorporated (AASHPI)
• Capital Market and Institute of the Philippines (CMIP)
• Philippine Stock Exchange (The online stock trading held at the SISC Capital Market and Entrepreneurship Center is supported by the PSE.)
• Scholastic Inc., Philippines (The Scholastic English Learning Program is held at SISC premises.)
• Las Piñas Doctors Hospital (LPDH) (One of the affiliate hospitals where SISC BS Nursing students do their internship.)
• Philippine Long Distance Telephone Company (PLDT) (One of the affiliate companies where SISC students do their internship.)
• First Place Inc. (One of the affiliate companies where SISC Tourism and Mass Communication students do their internship.)