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.
West Virginia Science Olympiad — Marshall University
West Virginia's state Science Olympiad tournament for high-school (Division C) teams, hosted by Marshall University; state champions advance to the Science Olympiad National Tournament.