Registration is NOW OPEN! Register ASAP for a spot to compete in our annual Elementary Science Olympiad. Space is limited to 60 teams.
Congratulations to all the 2025 BARESO Teams! Hope you all had a BEARY fun day!
The 2025 Bay Area Elementary Regional Science Olympiad Events are:
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Congratulations to all the 2024 ESO Teams!
Email us at cvhsscioly@gmail.com! Check out the ESO FAQs.
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Congratulations to all the participants at our first 2023 Bay Area Regional Elementary Science Olympiad!
Please Join the Mailing List if you’re interested in Castro Valley Elementary Science Olympiad programs!
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Or you could email us at cvhsscioly@gmail.com!
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2020-21 Elementary Virtual Summer Camp
CVHS Science Olympiad Club spearheaded CV’s first virtual summer STEAM camp for the CV Elementary School students. Below are the CVHS STEAM TEAM campers, the CVHS Event Supervisors and the events they taught.
“Dylan had loads of fun and was very engaged. Thank you for organizing such a great event and patiently explaining to the kids.”
“Brandon loved it and said he would do it again. He liked that he had all the materials and was able to follow along. Organizers were very prepared and spoke very well. They took time to explain and also keep the kids engaged.”
“Naina loved it a lot. And kudos to the CVHS student teachers, the events were presented well and interesting to kids. And thank you to the head coaches. Wish this was longer 
.”
“Miles enjoyed both Gummie Bear Osmosis and Density Towers activities. “It was great!””
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2019 CVESO (Castro Valley Elementary Science Olympiad)
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2018 CVESO (Castro Valley Elementary Science Olympiad)
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We are independent program run by parents and not affiliated with the Castro Valley Unified School District.