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LOS ANGELES COUNTY SCIENCE & ENGINEERING FAIR
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Category Descriptions

Category Descriptions


PLEASE NOTE there are revised categories for the 2026 fair!

LACSEF has revised its categories for the 2026 fair, adding new areas such as Applied Computational Science, Biomedical Engineering, and Robotics. Please click below for the complete list.

NEW 2026 Category Descriptions

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Scenes from Past Fairs!

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Judging Day

LA County Science Fair

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LA County Science Fair



STUDENT PHOTOS

S1301-Adrian Pham and Ilia Ghatei_woodland hills

S1405_Seth Nabat_Woodland Hills

S1513_Tinwin Htun_North Hollywood_

S1301_team_woodland hills

S1009_Neil Hu_Temple City

S0811A-Anish Anand_Palos_Aerdes judging 2

S0905_Mingfei Xu_south pasadena

S1124_Yanjun Chen_Palos Verdes_judging

S1216_Chloe Chen_Brentwood_judging

S0811A_Anish Anand_Palos_Verdes_judging

S0703_Chin_and_Lin_Claremont

S0602_Zichen Wei_judging

S0602_Zichen Wei_Claremont

S0518_Inu Cho_Palos_verdes_judging

s0411-2

S0411_Maryam Solinman_Sydney Wynn_Palos_Verdes

S0211_Aidan Filson_Claremont

S0317B_Aaron Lee_judging_Carson_Long_Beach

S0304A_Team_Brentwood

S0111_Adam Lu_Michael Chao_Palos Verdes



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