Division A: (Grades K-6). Missouri does not sponsor a Division A regional or state tournament
Division B: (Grades 6-9)
Division C: (Grades 9-12)
Division B: Open to students in grades 6-9. Of the 15 total students on a division B team, only 5 may be ninth graders. Division B schools are allowed to invite back up to five ninth graders if they have moved on to high school. If a division B team does invite their ninth graders back, these students are not allowed to participate on a division C team.
Division C: Open to students in grades 9-12. Of the 15 total students on a division C team, only 7 may be twelfth graders.
Detailed information regarding team composition can be found in the 2025-2026 Coaches Manual.
Schools that did not sponsor a team for the 2023-2024 season may register a team using the new school discount. The regular price to register a team is $200.00. New teams may register and receive a 33% discount, reducing the registration fees to $150.00 per team.
Be sure to check with your regional tournament director as some regionals will allow schools to register more than one team. It is important to note that regardless of the number of teams that a school register, only one team per school is eligible for advancement to the state tournament.
The first competition that all Science Olympiad teams in Missouri must participate in is the regional tournament. Missouri is divided into eight regions and teams are assigned to a regional tournament based upon their location. Missouri does not allow schools to change regions due to competitive reasons.
Each regional tournament will invite a minimum of their top four teams to participate in the state tournament. Some regionals allow more than one team per school to register, however only one team per school may qualify to participate in the state tournament.
If a regional does not have four registered teams by the December cutoff date, the unused spots are assigned to the regionals with the highest numbers of registered teams.
Once a school pays their registration fee they are automatically registered for the appropriate regional tournament. Teams can expect to be contacted by the regional tournament director usually about a month before the competition with important tournament information.
A complete list of the regional competitions in Missouri along with links to each region's website can be found here.