|Total teams||263 ( 1.54% 2021 to 2022)|
|Division B Champion||Daniel Wright Junior High School (Lincolnshire, IL)|
|Division C Champion||Adlai E. Stevenson High School|
|State Tournament Location||University of Illinois Urbana-Champaign|
The state of Illinois has a history of being competitive on the national level. Illinois can claim two national titles, both won by Daniel Wright Junior High School (2016, 2017), and has hosted the national tournament several times, most recently in 2010.
The Science Olympiad started from the endeavors of Gerard Putz and Jack Cairns, who thought that science education could benefit from a multi-school science competition. It has grown to be a nationwide competition with 48 states and has also raised interest in countries such as Canada and Japan.
The annual Illinois state competition is held at the UIUC. There is a system of divisions for the state tournament - division A and AA, AA being more competitive. Teams are placed in divisions based on the competitiveness of their regional competition and also their placing at the previous year's state competition. This system of divisions theoretically allows teams who aren't as financially supported to medal and place higher than they would if placed against exceptionally competitive teams that are gunning to go to Nationals.
Past State Champions
This is a record of the past state champions and runners-up, and their respective places at the national competition, if applicable. Scores at the state competition may be shown in parentheses.
- 1 Science and Arts Academy was originally placed at 18th. However, after a scoring error in Water Quality was discovered, they were awarded 14th place. There was no tiebreaker with Shady Side Academy, and both were awarded 14th.
- 2 2022 Illinois states ran with 2 groups (A and AA). The official scores (and the points shown) have each group separate. However, if the groups are combined, Marie Murphy wins over Daniel Wright 81 to 83. This is primarily due to Daniel Wright getting 41st in WIDI in the combined groups.
As of 10/18/2020, ISO is planning to run all regionals under the Mini SO format on 03/06/2021 and 03/13/2021. Build events are currently being decided whether they will be run as a trial event or cancelled.
April 10, 2021 and April 17, 2021: University of Illinois at Urbana-Champaign
Division B and C are both split into A and AA teams depending on size and experience. The top two scoring teams in each division, B and C, (regardless of A or AA status) qualify for the national tournament.
While Illinois Science Olympiad (ISO) does not have record of state results prior to 2013, a handful of state results have been reluctantly archived:
Until 2013, ISO did not release their full score sheets to the general public.
Western Illinois University Region
Lindenwood University-Belleville Region
Chicago Public Schools Region
*These teams are defunct and did not compete in the most recent season.
College of Lake County Region
College of DuPage Region
Rockford Valley College Region