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The California Science & Engineering Fair is the final science fair of the academic year for students throughout the State of California in grades 6 - 12, serving California's future scientists and engineers since 1952. The fair is hosted by the California Science and Engineering Foundation.

The 74th annual California Science and Engineering Fair will be held on Saturday and Sunday, April 12-13, 2025, on the campus of California Lutheran University in Thousand Oaks. This year we expect about 900 participants from 400 schools throughout the State who will present 800 projects in competition for awards totaling over $40,000.


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Latest News from the Fair (2025):

CSEF Is Back In-Person!
After four years of virtual fairs, CSEF 2025 will be held on the campus of California Lutheran University in Thousand Oaks on Saturday and Sunday, April 12-13, 2025.
Student Applications
Students who have qualified to participate in CSEF will be sent invitations individually to their personal email addresses that were provided to us by their affiliated fair. Being named by an affiliated fair is not sufficient. Students must complete an application with CSEF in order to participate. Here is the list of all students known to have qualified to date. If your fair has no students listed, or if your name is missing from the list for your affiliated fair, speak to that fair directly.
Judge Registration
Qualified scientists and engineers who wish to judge at CSEF 2025 should visit the Judges Page below.

Important Information About the Fair for:

  

CSEF Reference Library:

Our 2025 Benefactors:


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Haven't been to the Fair? Here are some of the photographs from previous years taken by our photographer. For the historically-minded, here's a short photo essay using photographs taken a few decades ago.

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Last updated: Fri Mar 14 01:26:25 PM PDT 2025
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