The Extra-curricular Activities (ECA) Programme at UISG is designed to allow students to pursue their interests, fostering independence and creativity. With over 160 activities available throughout the year, students from Years 1 to 12 can choose from various options, including sports, performing arts, virtual design, STEAM, academics, and community engagements/initiatives. The Activities program allows students to explore their interests and engage in exciting activities that contribute to their well-rounded education at UISG. 

The ECAs offered to these groups prioritize exploration, creativity, and a non-competitive environment to promote inclusivity for all students. This approach encourages students to actively participate in various activities, allowing them to uncover their unique talents and interests. A detailed catalogue is released before each session, providing a comprehensive list of the available activities.

Secondary students are offered a wide range of activities catering to diverse interests. These activities include service opportunities to empower students to impact broader communities positively. Secondary students can select from staff-led, external providers, or student-led activities.