<p>The Singapore Junior Biology Olympiad (SJBO) is a national biology competition for upper-secondary students, run by the Singapore Institute of Biology (SIBiol) in collaboration with Science Centre Singapore and supported by the Ministry of Education. Started in 2016 as a complement to the Singapore Biology Olympiad, it gives Secondary 2–4 students an early taste of the International Biology Olympiad and focuses on critical-thinking skills applied to biology.</p><ul><li>Open to Secondary 2–4 students (ages roughly 14–16) in Singapore schools; registration is co-ordinated through each school.</li><li>Single 2-hour online theory round, taken within a 9am–6pm window on the day of the test.</li><li>There is no longer a practical round — the competition is a theory-only examination.</li><li>Gold, Silver, Bronze and Honourable Mention awards are made to top scorers; 2024 saw around 1,000 medals awarded across categories.</li><li>An online briefing is held ahead of registration to walk schools and students through the format and past-paper material.</li></ul>