Mill Valley Middle, Mill Valley CA

Original Research by School Decision on Mill Valley Middle

Mill Valley Middle serves students in grades six through eight in the town of Mill Valley, a built-out residential community in Marin County with a compact, walkable downtown and surrounding wooded neighborhoods at the base of Mount Tamalpais. The school sits on Sycamore Avenue near the district office, positioned in a town where civic life concentrates around the downtown core and parks rather than sprawling campuses.

The school's academic profile rests on solid performance across state-tested subjects. In English language arts, proficiency runs strong across the three grades, with the largest share of seventh graders meeting or exceeding standards. Sixth grade shows slightly lower math proficiency than the upper grades, a pattern common in early middle school, while seventh and eighth grade math proficiency aligns closely. Science proficiency at eighth grade lands in the mid-range. When these results are averaged across tested subjects and grades, Mill Valley Middle sits in the top quartile among the districts serving Marin County, a positioning that reflects consistent strength rather than uneven performance. The school has only one year of reported state data, so longer-term trend patterns are not available.

The enrollment is stable and small for its grade band, drawn predominantly from families in the surrounding area. The student body is majority white with a smaller share identifying as multiracial and a smaller share identifying as Hispanic. Students qualifying for free or reduced-price lunch represent a modest proportion of enrollment, reflecting the overall economic profile of Mill Valley. Specific counts for students in special education or English learner programs were not available in the data.

Mill Valley is an affluent coastal town with a tight-knit character. Housing costs are very high, and rents are steep. The town's downtown is walkable and community-oriented, anchored by the public library set in Old Mill Park and a central plaza hosting farmers markets and gatherings. Commercial life concentrates along walkable corridors with local-serving shops and restaurants rather than big-box retail. The community's economy leans toward professional and technical work, with major employers including tech companies, the school district itself, and local cultural institutions. Transit to San Francisco is available through Golden Gate Transit. The town is built out and grows slowly, with new housing coming largely through infill, accessory dwelling units, and state-mandated planning rather than large subdivisions.

A significant context for families considering the area is the school funding picture. Voters approved a major school facilities bond in 2022, funding modernization of Mill Valley Middle School and other improvements, which increased property taxes. In June 2026, the district placed a parcel tax renewal on the ballot that would generate roughly one-third of the district budget and carries an annual escalator. The district warns that rejection would force teacher layoffs and program cuts. The district also recently adopted a new elementary English language arts curriculum centered on the science of reading and cultural literacy. These represent ongoing district priorities and costs that affect household budgets and the school experience.

Mill Valley Middle serves families drawn to a small, prosperous town with a strong sense of community and outdoor recreation access. The school's consistent academic performance, particularly in English language arts, positions it as a capable middle-grade option for students in this demographic. The setting is decidedly affluent and predominantly white, a neighborhood characteristic that families weighing enrollment would assess directly.

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Academic performance

How students perform on state tests, by grade, set against the district.

Math

Grade 667%

School 67% · District 67%

▲ 37 pts above state median · ▲ 11 pts above county median

Grade 778%

School 78% · District 78%

▲ 48 pts above state median · ▲ 22 pts above county median

Grade 878%

School 78% · District 78%

▲ 50 pts above state median · ▲ 27 pts above county median

English language arts

Grade 679%

School 79% · District 79%

▲ 35 pts above state median · ▲ 8 pts above county median

Grade 785%

School 85% · District 85%

▲ 39 pts above state median · ▲ 16 pts above county median

Grade 881%

School 81% · District 81%

▲ 37 pts above state median · ▲ 21 pts above county median

Science

Grade 871%

School 71% · District 71%

▲ 45 pts above state median · ▲ 23 pts above county median

Social studies

Grade 883%

School 83% · District 83%

▲ 34 pts above state median · ▲ 11 pts above county median

This schoolMill Valley Elementary, same grade

Graduation rate (ACGR) reflects the federally published Adjusted Cohort Graduation Rate for the most recent year available. We refresh this data annually at the close of each academic year in June. The federal source publishes a banded rate (for example, "90-94%") instead of an exact number for cohorts small enough to risk identifying individual students. The state distribution chart, where shown, plots every school in the state with a published rate or band; schools whose rate is federally suppressed are excluded. Where the federal source publishes a band rather than an exact rate, the school is placed within its band using a stable, ID-derived offset, so its position is consistent across visits.

Proficiency by household income

English language arts

Grade 6Lower-income18%Higher-income82%64 pp gap

Grade 7Lower-income71%Higher-income86%15 pp gap

Grade 8Lower-income63%Higher-income82%20 pp gap

Mathematics

Grade 6Lower-income0%Higher-income70%70 pp gap

Grade 7Lower-income50%Higher-income81%31 pp gap

Grade 8Lower-income53%Higher-income80%27 pp gap