The secondary school division provides an internationally-based educational curriculum. The curriculum meets the needs of students planning to attend North American and international colleges and universities after graduation. GSIS is accredited for the academically rigorous International Baccalaureate Diploma Program (DP) and the Middle Years Program (MYP) .
GSIS prides itself in providing an academic program within a nurturing and caring Christian environment where students, teachers, and parents work as a close knit community for everyone’s success. The student to teacher ratio is low, thus allowing for more student-teacher interaction and assistance. Assessment for and of learning is standards-based and emphasizes understanding and student achievement.
GSIS encourages educating the whole child, and to those ends offers a myriad of athletics and activities.