The booster program is offered to all elementary school students and operates on Saturday mornings with three separate seasons. The fall season is from September to November with the focus sport being soccer. Winter season focuses on swimming and runs from December to February. Basketball is the spring sport, which lasts from March to May. SIS faculty serves as experienced coaches for each group of students.  Sessions focus on student skill and game sense development while participating in an inclusive, fun environment.

The grades 4 and 5 athletic program is divided into 4 sports. The seasons are soccer, flag football, basketball, and swimming. All grade 4 and 5 students have the opportunity to participate in each of the 4 seasons. The program benefits the students mentally and physically, along with teaching skills such as teamwork and sportsmanship. Practices are held after school and the season ending Jamborees are held on Saturday’s either by SIS or neighboring international schools.