MESO — Middle/Elementary Science Olympiad.
A regional Science Olympiad for grades 3–8. Two divisions, 15 topics per division, season runs February through May. We're not affiliated; we just prep for it well.
The competition in one page.
Who runs it, who competes, what the season looks like.
MESO is a regional Science Olympiad for elementary and middle-school kids, organized into two divisions covering 15 topics each. Each topic is a written test taken solo or with a partner. The competition season runs February through May.
All 15 topics.
The list below is what MESO publishes each season. For event-specific scope, rules, and what to bring, check the official MESO Rulebook — it's the source of truth.
- Anatomy & PhysiologyHUMAN BODY & ANATOMY
- Circuit LabELECTRICITY & CIRCUITS
- CodebustersCODES & CIPHERS
- CrimebustersFORENSICS
- Experimental DesignSCIENTIFIC METHOD
- Green GenerationECOLOGY & ENVIRONMENT
- EstimaniaMATH & ESTIMATION
- Knock Knock - Who's ThereBIRDS & MAMMALS
- Weather or NotWEATHER & CLIMATE
- Reflection RelayLIGHT & OPTICS
- Simple MachinesSIMPLE MACHINES
- Straw TowerTOWER ENGINEERING
- Clay BoatBOATS & BUOYANCY
- Insect InvestigationINSECTS & ENTOMOLOGY
- Rocks & MineralsROCKS & MINERALS
200+ tests. Princeton, UT Austin & more.
What we built for MESO.
Topic-level prep spaces, AI Coach scoped to the rulebook, adaptive practice from past tests, Listen & Learn audio, and a 200+ test library. The full pitch is on /welcome — start there.