Contra Costa Science & Engineering Fair

Dates: March 9, 10, 11, 2023.

The Student Registration website has now been updated for 2023. Click on the button below to begin your registration process!

The Contra Costa County Science & Engineering Fair is dedicated to providing a high-quality science & engineering regional competition that leads to state, national and international competitions in 2023.

We had a successful virtual fair in 2022, with some new features that made student engagement simpler, and submission of all the International Science & Engineering Fair (ISEF) forms easier than ever. We will keep many of those changes in place for 2023.

As an ISEF-affiliated fair, Contra Costa Science Fair students are able to compete regionally and access, if successful, the following larger competitions:

  • California Science & Engineering Fair: April, 2023.
  • Broadcom MASTERS Middle School National Science Fair: October 27 – November 2, 2022
  • Regeneron International Science and Engineering Fair: May 13-19, 2023.

Understand the Deadlines

December 12, 2022
Deadline for receipt of all required project paperwork for pre-approval by the Scientific Review Committee (SRC.) Pre-approval is required for projects involving invertebrate or vertebrate animals, human subjects, recombinant DNA, tissue, pathogenic agents, or controlled substances. You must have advance approval of your project application from the SRC prior to experimentation. If in doubt, please submit the project research plan and required paperwork for the SRC review.

For projects requiring pre-approval, if there are any changes to procedures or experimental design after receiving pre-approval, projects are to be resubmitted for pre-approval if it alters the Risk Assessment Form 3.

Any project that makes major changes after approval must re-submit for approval. If you’re not sure whether you should re-submit for approval, please contact Janice Fujii at

January 16, 2023
Deadline for receipt of ALL other application forms from all students who are participating in the 2023 Science & Engineering Fair.

Questions about Science Fair registration? Please email Janice Fujii at

Understand the Rules

For a complete list of the rules of the Science & Engineering Fair, click this button:

Be a Fair Sponsor!

Interested in supporting the 2023 Contra Costa County Science & Engineering Fair? Click on the button for more information.

In order to have a successful fair, we need judges to review the students’ project boards and conduct student-scientist interviews. Click on the button to find out more about becoming a science fair judge.

Contra Costa County Science & Engineering Fair (CCCSEF) is pleased to announce the results of the 2022 Science Fair.

Eighty-six projects were submitted, and each received careful consideration by volunteer judges. These volunteers worked extended hours to ensure our community’s budding young scientists and engineers receive timely feedback through the Awards Results.  Judges, made up largely of veteran Science Fair volunteers, are well aware of how hard our students have worked in the past several months in preparation for this year’s regional Science Fair. They are proud to have contributed their time under extraordinary circumstances to make student feedback possible.

CCCSEF would like to thank the sponsors of the 2022 Science Fair, and the companies who provided judges that allowed the fair to take place for our community’s youth. They are shown below:

Supporting budding young scientists and engineers

The Grand Sweepstakes winners of the Contra Costa County Science & Engineering Fair (CCCSEF) go on to compete in the International Science & Engineering Fair (ISEF) each spring. In 2019, ISEF was held in Phoenix, Arizona. In 2022, ISEF was held in Atlanta, GA. Additionally, a limited number of student winners may also be asked to participate in the California State Science Fair competition and in the Broadcom Masters national competition.

The 3-day event is made possible through business investments, and is the gateway for students in the region to access state, national and international competition.

Directly contact the Science & Engineering Fair Team

April Treece
Fair Director
 (925) 672-3759

Janice Fujii
Fair Administrator