Tri-Valley Expanding Your Horizons is fiscally sponsored by Techbridge Girls, a 501(c)3 Non-Profit Organization ID #27-4162514.

Your tax-deductible donation to Expanding Your Horizons/Techbridge Girls will support our work in providing a gateway for middle and high school aged girls to fields in science, technology, engineering and mathematics (STEM).

Inspiring girls to recognize their potential and pursue opportunities in science and mathematics
Donate Today

Support the efforts to increase the participation of girls and women in math, science, engineering, and technology by making a contribution.

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A look at our past Conference photos where girls can gain solid practical experience with science as a process that is fun and compelling.

Registration is Closed

Thank you for your interest in Tri-Valley Expanding Your Horizons.

Tri Valley EYH has been cancelled. Thanks for all the great memories, and we hope you visit our sister conference to attend or volunteer: San Joaquin EYH in Stockton, CA (

If you are looking for other events like EYH, please check out other EYH Conferences in the Bay Area.

 If you are looking for other events, please check out other STEM opportunities in the Bay Area.