1) Raffles Mathematical Olympiad (RMO Round 1) by Raffles Institution is on 9th April 2026 (Thursday) - a one-hour multiple-choice online test (20 questions)
2) Raffles Science Olympiad (RSO) by Raffles Institution is on 2nd April 2026 (Thursday) - a one-hour multiple-choice test in Astronomy, Biology, Chemistry and Physics.
3) World English Competition (WEC) by The World Contests is on 18th April 2026 (Saturday, 9am) - a 1.5 hour online test (36 questions).
4) World Math Competition (WMC) by The World Contests is on 5th April 2026 (Sunday, 9am) - a 1.5h online test (36 questions).
5) World Science Competition (WSC) by The World Contests is on 19th April 2026 (Sunday, 9am) - a 1.5h online test (42 questions).
6) Visual - Spatial Mathlympics by Learners' Connection is on 22nd April 2026 (Wednesday) - a 1.5 hour written paper (30 questions).
7) Asia Pacific Mathematical Olympiad for Primary School (APMOPS) by Hwa Chong Institution is on 16th April 2026 (Thursday) - a 2h online test.
8) Raffles Mathematical Olympiad (RMO Invitation Round) by Raffles Institution is on 7th May 2025 (Thursday) - a 1.5 hour written paper.
9) World Chinese Contest (WCC) by The World Contests is on 4th April 2026 (Saturday, 9am) - a 1.5 hour online test (42 questions).
10) World Math Olympiad (WMO) by The World Contests is on 12th April 2026 (Sunday, 9am) - 1.5 hour online test (36 questions).
11) World Science Olympiad (WSO) by The World Contests is on 26th April 2026 (Sunday, 9am) - 1.5 hour online test (36 questions).
12) World English Olympiad (WEO) by The World Contests is on 11th April 2026 (Saturday, 9am) - 1.5 hour online test (42 questions).
13) Asia Pacific Mathematical Olympiad for Primary School (APMOPS) Invitation Round by Hwa Chong Institution is on 30th May 2026 (Saturday) - a 2h written paper (6 questions).
14) Singapore Primary Science Olympiad (SPSO) by NUS High School is on 19th May 2026 (Tuesday) - a one-hour 15 minutes multiple-choice test (40 questions).
15) National Mathematical Olympiad of Singapore (NMOS - 1st round) by NUS High School Preliminary Round is on 14th July 2026 (Tuesday) - Preliminary Round: 1.5 hour written paper.
16) Annual Mathlympics is on 8th July 2026 (Wednesday) by Learners' Connection - 2 hours written paper (28 open-ended questions in Vault section + 30 open-ended questions in Sprint section)
