Oak Grove Union School District is a school district in Sonoma County, California.
It has around 800 students[citation needed] and serves Graton and parts of western Santa Rosa.
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.
The superintendent of the district is Amber Stringfellow.