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SHOW YOUR BRILLIANCE
SAN DIEGO'S SCIENCE AND ENGINEERING FAIR SINCE 1955
Science | Technology | Engineering | Math |
Open to all San Diego and Imperial County Students Grades 6th through 12th
Greater San Diego Science & Engineering Fairs
Since 1955, the GREATER SAN DIEGO SCIENCE AND ENGINEERING FAIR (GSDSEF) has provided an inspiring experience in science and engineering for tens of thousands of San Diego and Imperial County students, motivating them to pursue careers in science, technology, engineering, and mathematics. This regional competition challenges students to go beyond classroom studies to do independent research – to ask compelling questions, to design and implement innovative solutions, and to present and defend results to judges who are professionals in their fields.
71st Greater San Diego Science and Engineering Fair
The 71st Greater San Diego Science and Engineering Fair was held this year at the Balboa Park Activity Center, on Wednesday, March 12th.
75th International Science and Engineering Fair
The world's largest and most prestigious science competition, concluded with the Grand Awards ceremony in host city Columbus, Ohio. Over 30 million high school students from 1,600 affiliated fairs in 70 countries competed to qualify, of which only 1,700 students made it, including 10 from the Greater San Diego Science and Engineering Fair.
Thank You To Our Sponsors
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JUDGES
PROFESSIONAL SOCIETIES AND AWARDS
VOLUNTEERS
Important Dates
JAN
2026
2
Student Registration Begins
MAR
2026
12
Application Payments Required.
TEACHERS
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Get Your Students Involved
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Advisor Responsibilities
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Teacher Resources
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STUDENTS
The Science Fair is your gateway to discovering the endless possibilities within the scientific world.
HOW TO GET STARTED
The GSDSEF follows the rules and guidelines set by the International Science and Engineering Fair. The GSDSEF has set additional guidelines to protect the safety of participants in addition to the ISEF Rules and Guidelines.
PARTICIPATION PROCESS
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STUDENT RESOURCES
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MENTORING / TUTORING
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STUDENT AND TEACHERS RESOURCES
The Greater San Diego Engineering & Science Fair promises an enriching experience for students and teachers alike. We have carefully organized a set of rules to guide participants through the event, providing a clear understanding of project categories and expectations. Get ready to engage with the wonders of science in a meaningful way!
ISEF and GSDEF Rules
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Categories
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Judges
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CASE STUDY
Project Spotlight
Year completed:
2025
STUDENT
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PROBLEM ISSUE:
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