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Average

#567 of 1,790 private schools in CA

Top 32% of private schools

Mount Tamalpais School

Elementary School

100 HARVARD AVE, Mill Valley, CA 94941

Private Estimated Score

Estimated academic score. This school does not have standardized test data. Based on CA statewide data. Learn more

Enrollment

250

Student-Teacher

6.6:1

Score

6.9

Grades

T1 – 8th

Updated 2021-22

How this school compares

In Mill Valley

#3 of 4

public schools

California elementary schools

#309 of 1,102

About Mount Tamalpais School

Mount Tamalpais School serves 250 students from transitional kindergarten through eighth grade in Mill Valley, California. This public elementary school operates with an exceptionally low student-teacher ratio of 6.6 to 1, supported by 38 full-time equivalent teachers who can provide individualized attention to their students. The school has earned a strong 9.0 out of 10 rating from MySchoolScout and ranks in the 52nd percentile among California elementary schools, placing it at #854 out of 1,790 schools statewide.

This solid performance reflects the school's commitment to providing quality education in a supportive learning environment. Mount Tamalpais School sits in the heart of Mill Valley, a highly educated community where 78% of residents hold bachelor's degrees or higher. The surrounding neighborhood features a median household income of $206,580 and median home values of nearly $1.8 million, with a low poverty rate of just 5.5%.

This affluent area of 32,190 residents creates a stable educational environment with strong community support. The school is positioned in a large suburban setting that offers students access to both academic resources and the natural beauty that defines the Mill Valley area, nestled in the shadow of Mount Tamalpais itself.

What Parents Should Know

With a student-teacher ratio of 6.6:1, Mount Tamalpais School offers a notably low ratio compared to the national average. This typically means smaller class sizes and more opportunities for one-on-one interaction between students and teachers.

As a private school, Mount Tamalpais School operates independently from the local public school district. Families considering this school should inquire about tuition costs, financial aid availability, and the admissions process. Private schools are not required to follow the same curriculum standards as public schools, which can be either an advantage or a consideration depending on your priorities.

Financial Overview

Source: IRS Form 990 (2023 filing)

Per-Pupil Spending
Total expenses ÷ enrollment
$48,261
Per-Pupil Revenue
Total revenue ÷ enrollment
$55,205
Financial Health
Revenue-to-expense ratio (>1.0 = surplus)
1.14x — Strong
Tuition Dependency
Share of revenue from program services (tuition, fees)
75%
Total Assets
End-of-year total assets from IRS filing
$27.4M

Financial data from IRS Form 990 filings via ProPublica Nonprofit Explorer. Per-pupil figures based on current enrollment of 250 students. Not all private schools file Form 990.

Compare to Public Schools

Beta

How Mount Tamalpais School compares to 7 public schools serving similar grades in Mill Valley, CA

Student-Teacher Ratio
6.6:1
This School
vs
19.9:1
Public Avg
Avg School Size
250
This School
vs
546
Public Avg
Avg School Scout Rating
6.9
This School
vs
8.4
Public Avg

Student Demographics

White 77.2% vs 0%
Hispanic 2.8% vs 0%
Asian 2.8% vs 0%
Black 1.2% vs 0%
Mount Tamalpais School Mill Valley Public Avg

Nearby Elementary Schools

School Rating
Mount Tamalpais School (this school) 6.9
Tamalpais High 8.8
Mill Valley Middle 8.6
Park Elementary 9.0
Tamalpais Valley Elementary 9.3
Edna Maguire Elementary 6.4
Old Mill Elementary 7.8
Strawberry Point Elementary 8.9

Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.

Score Breakdown

What This Rating Measures

This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in CA.

Classroom Attention
? Student-teacher ratio calibrated against other private schools. Lower ratios mean more individual attention. (30% of overall score)
A 8.7 / 10
View breakdown
Student-Teacher Ratio 6.6:1
Instructional Commitment
? Total annual instructional hours based on school day length and days per year. (15% of overall score)
B 5.8 / 10
View breakdown
School Day Length 7 hours
Annual Instructional Hours 1,211
Diversity & Inclusion
? Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
C+ 4.3 / 10
View breakdown
Diversity Index 38%
Community Context

Data Unavailable

School Profile
? Enrollment size and grade span breadth — indicators of program depth and peer community. (15% of overall score)
A- 8.1 / 10
View breakdown
Enrollment 250
View data sources

Score basis: Private school model

Data coverage: 80% of scoring components had data

Components scored: 4 of 5

Ranking pool: Private schools in CA

Test Scores

Test score data not yet available for this school.

Student Demographics NCES PSS (SY 2021-22)

White 77.2%
Two or More 16.0%
Hispanic 2.8%
Asian 2.8%
Black 1.2%

Source: NCES Private School Survey (PSS)

Location

100 HARVARD AVE, Mill Valley, CA 94941

Nearby Alternatives

Families considering Mount Tamalpais School may also want to explore other elementary schools in the area. Tamalpais Valley Elementary (rated 9.3/10, 1.1 miles away), which scores notably higher. Another option is Park Elementary (rated 9.0/10, 1.0 miles away), which scores notably higher. Additionally, Dr. Martin Luther King Jr. Academy (rated 8.9/10, 1.6 miles away, in nearby Sausalito), which scores notably higher. For more schools in Mill Valley, see our Mill Valley schools guide .

Nearby Schools

20 within 2.8 mi
School Distance Rating
Mount Tamalpais School Mill Valley 0.0 mi
Tamalpais High Mill Valley 0.3 mi 8.8
Terra Marin School Mill Valley 0.5 mi
Mill Valley Middle Mill Valley 0.6 mi 8.6
MARIN HORIZON SCHOOL Mill Valley 0.8 mi 7.5
Marin Horizon School Mill Valley 0.8 mi
Park Elementary Mill Valley 1.0 mi 9.0
Tamalpais Valley Elementary Mill Valley 1.1 mi 9.3
THE HELIX SCHOOL Mill Valley 1.1 mi
Edna Maguire Elementary Mill Valley 1.4 mi 6.4
TERRA MARIN SCHOOL Mill Valley 1.4 mi 7.9
North Bridge Academy Mill Valley 1.4 mi
NORTH BRIDGE ACADEMY Mill Valley 1.4 mi 6.0
Dr. Martin Luther King Jr. Academy Sausalito 1.6 mi 8.9
Old Mill Elementary Mill Valley 1.6 mi 7.8
Strawberry Point Elementary Mill Valley 1.7 mi 8.9
THE NEW VILLAGE SCHOOL Sausalito 2.0 mi 6.0
The New Village School Sausalito 2.0 mi
Lycee Francais de San Francisco (Sausalito) Sausalito 2.1 mi
MARIN PRIMARY & MIDDLE SCHOOL Larkspur 2.8 mi 7.2

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 Mount Tamalpais School 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
Anne Darling Elementary San Jose, CA 6.9
Aurora Elementary Los Angeles, CA 6.9
BLUE OAK SCHOOL Napa, CA 6.9
Bridge Street Elementary Los Angeles, CA 6.9
CARDEN CONEJO SCHOOL Westlake Village, CA 6.9
CORNERSTONE CHRISTIAN SCHOOLS Camarillo, CA 6.9

Frequently Asked Questions

Common questions about Mount Tamalpais School

What grades does Mount Tamalpais School serve?

Mount Tamalpais School serves students in grades T1 through 8th.

How many students attend Mount Tamalpais School?

Mount Tamalpais School has an enrollment of approximately 250 students.

What is the student-teacher ratio at Mount Tamalpais School?

The student-teacher ratio at Mount Tamalpais School is 6.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does Mount Tamalpais School rank in CA?

Mount Tamalpais School is ranked #567 out of 1,790 private schools in CA.

What is Mount Tamalpais School's MySchoolScout rating?

Mount Tamalpais School has a composite rating of 6.9 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.

Is Mount Tamalpais School a private school?

Yes, Mount Tamalpais School is a private coeducational school with a Nonsectarian affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.

Is Mount Tamalpais School a religious school?

No, Mount Tamalpais School is a nonsectarian (non-religious) private school.

11 schools nearby View map →

Neighborhood Context

City Safety
Elevated (1,120/100K)

FBI UCR 2024. City-level (Mill Valley). Data >1 year old.

Quick Facts NCES PSS (SY 2021-22)

Grades
T1 – 8th
Enrollment
250
Gender Split
46% M / 54% F
Student-Teacher Ratio
6.6:1
Teachers (FTE)
38
Type
private
Coed Status
coed
Affiliation
Nonsectarian
School Day
7 hours
Days Per Year
173 days
Setting
Large Suburb
County
MARIN
Data Year
2022–2023

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 methodology

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