Old Mill School is one of 5 public elementary schools in Mill Valley, California, along with Park, Tamalpais Valley, Edna Maguire, and Strawberry Point Schools. The main building, built in 1921, is the oldest existing public elementary school building in Mill Valley. At the beginning of the 2015 school year, there were 333 students at Old Mill in kindergarten through 5th grades, and 14 grade-level teachers assisted by subject-specific teachers and teacher's aides.
