There are three Science Olympiad Divisions:
- Division A (Grades K-6) We do not have A teams in Missouri
- Division B (Grades 6-9) There may be up to 15 students with only 5 of the students being in the 9th grade. If a 9th grade student participates in the B division, this excludes them from competing on the high school team as well.
- Division C (Grades 9-12) There may be up to 15 students with only 7 of the students being in the 12th grade. If a 9th grade student is participating in C, they may not participate on the B team as well.