.jpg){kind=logo}
Science Olympiad is a nationwide competition. Students compete in 23 events that include earth science, biology, chemistry, physics, and engineering. Science Olympiad is designed to increase a student’s interest in STEM fields and provide recognition for outstanding achievement in team events. Top teams advance from Regional to State to National levels.
Maryland Science Olympiad is the State chapter for all of Maryland. We are a 501(c)(3) non-profit and host competitions for over 2,000 students in the state.
Student Sign In for Online Tests: Student Dashboard
Interested in volunteering? We're looking for test writers! Sign up here!
~ ~ Registration for the 2025-26 season will open on 8 September 2025. ~ ~
Division A (Elementary school) Functions
LOCAL INVITATIONAL TOURNAMENTS**
**Invitationals are optional practice tournaments run by their respective hosts - not MSO - and are shared for informational purposes only
2025
9/27 – 10/4/25: BESSO Tryits (B/C) – virtual, mini
11/1/25: BESSO First Chance (B/C) – in person, @ Reservoir HS
12/20/25 : Clarksville MS (B) – in person
2026
1/17/26 : UMBC Invitational (C) – in person, FREE
1/24/26 : CrabSO – in-person, location Clarksville Middle
1/25 – 1/31/26 : Crab SO – satellite, virtual
3/7/26 : BESSO Growing (B/C) – in person, @ Reservoir HS
3/21/26 : Churchill HS (C) – in person
REGIONAL TOURNAMENTS
February 28, 2026
MSO Regional Div B East/West
(Richard Montgomery HS)
March 7, 2026
MSO Regional Div B Baltimore
(Morgan State University)
[[Division C]]
February 21, 2026
MSO Regional Div C-01 Western Regional
(Montgomery College- Germantown)
February 28, 2026
MSO Regional Div C-03 Eastern Regional
(Western HS)
March 14, 2026
MSO Regional Div C-02 Central Regional
(Mount View MS)
STATE TOURNAMENT
April 11, 2026
MD State Tournament @ Johns Hopkins University (Div B)
Sponsored by JHU Center for Educational Outreach
April 18, 2026
MD State Tournament @ UMBC (Div C)
May 2, 2026
BESSO Division A Invitational 1
(Clarksville MS)
May 30, 2026
BESSO Division A Invitational 2
(John Carrol School)
2025-26 MSO SEASON OVERVIEW AND INFORMATION
- New Regional map for Division C (3 regions)
- New mailing address- see updated W9
- September: Div C capped at 1 team registration, to extend beyond approx. October
- August 2025 Town Hall slides with addl. information
MD TOURNAMENT RESULTS
MARYLAND REGIONAL SPLITS
See below for preliminary Regional Tournament assignment:
Division B Regional Split
https://scilympiad.com/data/org/md/public/MSO_DivB%20Region%20Map_231106.jpg
Division C Regional Split NEW 2025-26:
https://scilympiad.com/data/org/md/public/MSO%20Div%20C%20Regions%20Map%202025-26_v250903.jpg
Registering more than one Division? Make sure you follow these directions.