The Oak Grove Union School District is located in Sonoma County, bordering the cities of Sebastopol and Santa Rosa. The district is comprised of two schools. Oak Grove School, a k-5 grade school, is nestled in the hills above the little town of Graton. Willowside Middle School, a 6-8 grade middle school is located just west of Santa Rosa, among vineyards and rural environments. Both schools boast small populations with a private school-like atmosphere.