Very Good
#1729 of 9,533 schools in CA
Top 18% in state
Old Mill Elementary
Elementary School · Mill Valley Elementary
352 Throckmorton Ave., Mill Valley, CA 94941
Enrollment
251
Student-Teacher
20.9:1
Score
7.8
Grades
Kindergarten – 5th
Enrollment
251
Student-Teacher
20.9:1
Score
7.8
Grades
Kindergarten – 5th
Updated
2022-23
Updated 2022-23
How this school compares
In Mill Valley
#6 of 7
public schools
California elementary schools
#1,216 of 5,817
In district
#5 of 6
Mill Valley Elementary
Equity
9.8 / 10
Exceptional
About Old Mill Elementary
Old Mill Elementary serves 251 students in kindergarten through fifth grade in the heart of Mill Valley, earning recognition as one of California's top-performing elementary schools. With a MySchoolScout rating of 9.2 out of 10 and ranking 111th among the state's 9,566 elementary schools, the school demonstrates exceptional academic achievement. The school's 12 full-time equivalent teachers maintain a student-teacher ratio of 20.9 to 1, supporting strong educational outcomes across all grade levels.
Students excel in both English Language Arts, where 87% score proficient or above, and mathematics, with 84% achieving proficiency or higher. These impressive results place Old Mill Elementary in the 99th percentile statewide. Located at 352 Throckmorton Avenue, the school serves a highly educated community where 78% of residents hold bachelor's degrees or higher.
The surrounding 94941 ZIP code reflects an affluent area with a median household income of $206,580 and median home values of $1,798,100, while maintaining a low poverty rate of 5.5%. Old Mill Elementary operates within Mill Valley's large suburban setting in Marin County, where families benefit from both the natural beauty of the area and proximity to educational resources that support student success.
What Parents Should Know
The student-teacher ratio at Old Mill Elementary is 20.9:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.
Score Breakdown
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Old Mill Elementary — Students at Old Mill Elementary score 85% proficient, which is above what's typical for similar communities (expected: 73%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
4%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 10 test records from CA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 6.5/10.
How Old Mill Elementary Compares
See how Old Mill Elementary performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 87% (2019) to 83.74% (2024). Reading/ELA proficiency has declined from 92% (2019) to 86.18% (2024).
Location
352 Throckmorton Ave., Mill Valley, CA 94941
Nearby Alternatives
Families considering Old Mill Elementary may also want to explore other elementary schools in the area. Park Elementary (rated 9.0/10, 0.9 miles away), which scores notably higher. Another option is TERRA MARIN SCHOOL (rated 7.9/10, 1.7 miles away), with a very similar rating. Additionally, MARIN HORIZON SCHOOL (rated 7.5/10, 0.8 miles away), with a very similar rating. For more schools in Mill Valley, see our Mill Valley schools guide .
Nearby Schools
20 within 2.6 mi| School | Distance | Rating |
|---|---|---|
| NORTH BRIDGE ACADEMY Mill Valley | 0.4 mi | 6.0 |
| North Bridge Academy Mill Valley | 0.4 mi | — |
| Marin Horizon School Mill Valley | 0.8 mi | — |
| MARIN HORIZON SCHOOL Mill Valley | 0.8 mi | 7.5 |
| Park Elementary Mill Valley | 0.9 mi | 9.0 |
| Mill Valley Middle Mill Valley | 1.5 mi | 8.6 |
| MOUNT TAMALPAIS SCHOOL Mill Valley | 1.6 mi | 6.9 |
| Mount Tamalpais School Mill Valley | 1.6 mi | — |
| Terra Marin School Mill Valley | 1.8 mi | — |
| THE HELIX SCHOOL Mill Valley | 1.5 mi | — |
| Tamalpais High Mill Valley | 1.6 mi | 8.8 |
| Edna Maguire Elementary Mill Valley | 1.5 mi | 6.4 |
| OAc San Francisco Larkspur | 1.9 mi | — |
| Chronos Academy Lakspur | 1.9 mi | — |
| TERRA MARIN SCHOOL Mill Valley | 1.7 mi | 7.9 |
| MARIN PRIMARY & MIDDLE SCHOOL Larkspur | 1.9 mi | 7.2 |
| ST PATRICK SCHOOL Larkspur | 2.2 mi | 7.2 |
| Neil Cummins Elementary Corte Madera | 2.3 mi | 5.9 |
| Tamiscal High (Alternative) Larkspur | 2.5 mi | 4.0 |
| Hall Middle Larkspur | 2.6 mi | 8.4 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 94941 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$210,217
Median Home Value
$1,990,100
Median Rent
$2,949/mo
Population
32,349
College Educated
76.9%
Homeownership
66.6%
Avg Commute
27.5 min
Poverty Rate
5.4%
Median Age
45.6
Community Profile
The community surrounding Old Mill Elementary has a median household income of $210,217. It is a well-educated community where 77% of adults hold a bachelor's degree or higher. The median home value in the area is $1,990,100, with a median rent of $2,949/month. The local poverty rate of 5.4% is relatively low. The average commute for residents is 28 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| A. L. Conner Elementary Orange Cove, CA | 7.8 |
| Academy for Enriched Sciences Encino, CA | 7.8 |
| Benjamin Bubb Elementary Mountain View, CA | 7.8 |
| Bret Harte Elementary Sacramento, CA | 7.8 |
| Cabazon Elementary Cabazon, CA | 7.8 |
| Cottonwood Creek Charter Cottonwood, CA | 7.8 |
Frequently Asked Questions
Common questions about Old Mill Elementary
What grades does Old Mill Elementary serve?
Old Mill Elementary serves students in grades Kindergarten through 5th.
How many students attend Old Mill Elementary?
Old Mill Elementary has an enrollment of approximately 251 students.
What is the student-teacher ratio at Old Mill Elementary?
The student-teacher ratio at Old Mill Elementary is 20.9:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Old Mill Elementary rank in CA?
Old Mill Elementary is ranked #1729 out of 9,533 schools in CA.
What is Old Mill Elementary's MySchoolScout rating?
Old Mill Elementary has a composite rating of 7.8 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Old Mill Elementary?
Based on the most recent state assessment data, Old Mill Elementary has 84.7% math proficiency and 87.6% reading/ELA proficiency.
Is Old Mill Elementary a charter school?
No, Old Mill Elementary is not a charter school. It is a traditional public school operated by the local school district.
Is Old Mill Elementary a Title I school?
No, Old Mill Elementary is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Old Mill Elementary?
4.0% of students at Old Mill Elementary qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Explore More Schools
Neighborhood Context
Powered by 
FBI UCR 2024. City-level (Mill Valley). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 5th
- Enrollment
- 251
- Student-Teacher Ratio
- 20.9:1
- Teachers (FTE)
- 12
- Free/Reduced Lunch
- 4.0%
- Type
- regular
- Setting
- Large Suburb
- County
- Marin County
- Phone
- (415) 389-7727
- Data Year
- 2023–2024
Resources & Links
District
Mill Valley Elementary- District Enrollment
- 2,282
- Schools in District
- 6
- Per-Pupil Spending
- $21,244
- District Rank
- #5 of 6
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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