A national competition that selects the UK team for the International Olympiad in AI. Secondary students sit a free three-hour online exam on programming and deep learning, and high scorers go on to interviews and a training and selection camp.
AI Singapore (AISG), funded by the Ministry of Education
AI Singapore's free national AI olympiad for students in MOE schools: a 150-question preliminary round in school labs, then a final assessment with AI theory and Python programming; it is the first stage toward Singapore's IOAI team.
Singapore National Institute of Chemistry (SNIC) with NUS, supported by MOE
SNIC's two-round chemistry olympiad for upper-secondary students: an online multiple-choice round in school, then an open-ended paper at NUS for the top scorers.
Louisiana Science Olympiad — Louisiana Christian University
Louisiana's state Science Olympiad tournament for high-school (Division C) teams, hosted by Louisiana Christian University; state champions advance to the Science Olympiad National Tournament.
University of Cambridge (Cambridge Chemistry Challenge)
A 90-minute chemistry paper set by Cambridge chemists for Lower Sixth students at UK schools, going well beyond A level; top scorers are invited to a Cambridge residential.
Japan's national astronomy and astrophysics olympiad, which selects up to 5 students for the International Olympiad on Astronomy and Astrophysics (IOAA). The 5th edition has finished, and the next edition's entry details have not been published yet.