SIS currently serves 600 students in grades Pre-K-12. In spring of 2010, the school's accreditation was extended through 2016 by the US-based Western Association of Schools and Colleges (WASC). GSIS is also an International Baccalaureate Organization (IBO) World School, offering the Primary Years Programme (PYP, Grades Pre-K-5, authorized in 2011), the Middle Years Programme (MYP, Grades 6-10, authorized 2012), and the Diploma Programme (DP, Grades 11-12, authorized in 2009) as its overall educational framework. GSIS holds the distinction of being one of two schools in South Korea accredited in the PYP, MYP and DP.
GSIS offers a 1:1 Mac laptop-based educational environment to its secondary students (Gr. 6-12). The school advocates for 21st century learning approaches.