China National Biology Olympiad (CNBO)

STEM

Committee for China National Biology Olympiad, under the China Association for Science and Technology

National League exam (2027 cycle, following the usual mid-May pattern)approximate

May 9, 2027 (UTC+8)

A multi round biology competition for grade 10 and 11 students across China, moving from theoretical multiple choice rounds to a third round combining theory and practical laboratory work. Around 40,000 students sit the opening round each year, and the strongest performers are tracked toward China's team for the International Biology Olympiad.

Registration

Format: Hybrid
Age: 15-17
Participation: Individual
Location: China
Entry fee: Free
Prize: Advancement through national rounds; top performers are tracked toward China's IBO team.

Timeline

Registration deadline (2026 cycle)March 31, 2026 (UTC+8) source
National League exam (2026 cycle)May 10, 2026 (UTC+8) source
National League exam (2027 cycle, following the usual mid-May pattern)approximateMay 9, 2027 (UTC+8) source

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