Old Adobe Union

Located at 845 Crinella Drive in Petaluma, California, Old Adobe Union is an active, traditional public elementary school district serving a small city community within the Santa Rosa-Petaluma metropolitan area. Operating five primary campuses, the district delivers early educational programming spanning kindergarten through sixth grade. According to federal educational data for the 2024–2025 school year, Old Adobe Union serves a total enrollment of 1,737 students. The student population reflects the diverse fabric of the surrounding Sonoma County region, comprising 808 White students, 751 Hispanic students, 98 students of two or more races, 49 Asian students, and 22 Black students, alongside American Indian and Pacific Islander learners. Grade-level enrollment is particularly robust in the early years, anchored by 346 kindergarten pupils and maintaining steady cohorts of over 200 students in each subsequent elementary grade.

To deliver comprehensive educational and developmental support, Old Adobe Union maintains a substantial workforce totaling over 383 full-time equivalent (FTE) staff members. Instructional delivery is driven by approximately 146 FTE classroom teachers, maintaining an advantageous student-to-teacher ratio of roughly 12 to 1 that facilitates individualized learning. This teaching faculty is bolstered by 40 FTE instructional aides and nearly 197 FTE support personnel who oversee specialized services, administrative operations, and campus resources. Positioned within California's 2nd Congressional District, the district provides a well-resourced learning environment designed to prepare young scholars for middle school transition. Families and researchers seeking additional information regarding district programs can contact administrative offices directly at (707) 765-4322 or visit the district's website at www.oldadobe.org.