Welcome to Northern California Science Olympiad!

About Us How to Join

Welcome to the 2025-2026 Season

The rules manuals will be released on Sept 2, 2025 and they will be available for free at https://www.soinc.org/.

What is Science Olympiad?

Science Olympiad is an international nonprofit organization devoted to improving the quality of science education, increasing student interest in science and providing recognition for outstanding achievement in science education by both students and teachers. Northern California Science Olympiad - a chapter of Science Olympiad - hosts, manages, or supports over 5 Invitational, 8 Regional, and 1 State Tournaments in Northern California.

Science Olympiad Tournaments are like academic track meets.

At a Science Olympiad Tournament, students work together in teams of up to 15 to compete in 23 events. The events change from year to year, covering fields and topics including: anatomy and biology, earth science, chemistry, physics, geology, mechanical and structural engineering, and technology. Some events entail taking a test, while others involve doing hands-on labs, or even building and bringing a device to the tournament. The list of Events and their descriptions can be found here.

Each Science Olympiad season begins in September, when the Event Rules are released and Registration opens. Teams then spend several months preparing for their Regional Tournament in winter or spring of the next year (dates vary depending on the exact Regional). The top teams from each Regional go on to compete at the Northern California State Tournament in April, vying for the title of State Champion and the opportunity to represent Northern California at the National Tournament in May.

Middle school students setup their Boomilever, a wooden structure, for strength testing.
Photo Credit: Emily Miaou
A student analyzes a hair sample in the Crime Busters event.
Photo Credit: Emily Miaou

Teams and Events are split into three "Divisions". Teams in Divisions B or C only compete against other teams in the same Division.

Division A (Grades 4-6)

Division A is the elementary school Division. Division A events are specific to the tournament. Division A teams do not compete against each other, but rather strive to meet pre-defined levels of requirements in each event.

Division B (Grades 6-9)

Division B is the middle school Division. Division B events are usually easier and feature less advanced topics than Division C events.

Division C (Grades 9-12)

Division C is the high school Division. Division C events are usually harder and feature more advanced topics than Division B events.

5700+

Students

382

Teams

243

Schools

10

Counties

Start a Team

Learn how to take part in one of the premier science competitions in the nation involving over 7,000 teams in all 50 states.