The 2025/2026 academic year marked a period of notable achievement for Secondary students (Grades S1 through S4) at SIS South Jakarta. Engaging in rigorous international math olympiads, high-stakes global debating, robotics, creative technology, and regional science competitions, our Secondary learners demonstrated critical thinking, discipline, and leadership.

Here are the highlights of our Secondary students’ accomplishments on local, national, and international stages this academic year.

Academic Olympiads, STEAM & Global Debating

Singapore Mathematics Challenge & Olympiads 2025

• Yuju Song (S4): Achieved a Perfect Score in the Singapore Mathematics Challenge 2025.
• Jaewoo Han (S1): Gold Medal in the Singapore Mathematics Challenge 2025.
• Eunyul Lee (S3): Gold Medal (Singapore Mathematics Challenge 2025) & Silver and Bronze Medal (Singapore International Math Olympiad Challenge 2025).
• Siwoo Kim (S2): Silver Medal in the Singapore Mathematics Challenge 2025.
• Chindy Schatzi Queena (S3): Two Bronze Medals across the Singapore International Math Olympiad Challenge 2025 and Singapore Math Challenge 2025.
• Yoshua Anggen Hans Lumentah (S4) & Jungwon Lee (S2): Bronze Medals in the Singapore Mathematics Challenge 2025.

Harvard World Model UN, WSC & Global Rounds

• Abiruchi Mehta (S1): Gold Medal in Harvard World Model United Nations Indonesia & United Nations Economic and Social Council MISMUN 2026.
• World Scholar’s Cup (WSC) – Senior Division: S3 students Alia Isabelle Mercier, Sebastian Sebastian Dirgantoro, and Rodrigo Al Ciel Diaz (alongside JC2 teammate Kaitlyn Xaviera Cocagne) brought home 12 Gold and 22 Silver Medals. Rodrigo Al Ciel Diaz also secured a Silver Medal at the World Scholar’s Cup 2025 – Yale Global Round.
• World Scholar’s Cup (WSC) – Junior Division: Cephas Eliah Orencio (S2) and Myra Wadhwa (S2)joined Primary teammates to earn 13 Gold and 30 Silver Medals. Additionally, Cephas Eliah Orencio (S2), Andari Rose Mastura (S2), and Yerin Goentoro Park (S2) secured Gold & Silver Medals in The World Scholar’s Cup Jakarta Junior Round.

Robotics, Tech & Science Contests

• Caniara Zalika Wijaya (S3): Gold & Silver Medal in the First Lego League Competition.
• Edrich Marlo Yang (S2): 1st Place Awardee in Future Creator Fest 2026.
• Jonty Ivan Krause (S1): Emerald Award in Japan International Science and Math Olympiad (JISMO) Spring 2025.
• Kevin Riddhagni Frumau (S1): Sapphire Award in JISMO Spring 2025.

Our Secondary students continue to embody analytical excellence, teamwork, and resilience. Congratulations to all our student achievers for raising the bar higher this academic year!

Through a rich curriculum that balances STEAM, languages, and athletics, SIS South Jakarta Secondary ensures every child develops academic rigor alongside confidence and physical agility.

Learn more about our Primary curriculum at www.sisschools.org/sis-sj