From its completion in 1921 to its abandonment in the 1970s, Geyserville Union School was a major social, cultural, and educational center for Geyserville and the surrounding rural community. The building was the first poured concrete structure in Geyserville.

Architect Henry C. Smith's design, which combined Mission Revival and Spanish Colonial Revival elements, was a break from the locally prevailing vernacular Victorian style. While numerous examples of these revival styles were built in Southern California, there are few examples in Geyserville.

Adapted from the NRHP submitted in 1979.