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#1071 of 1,790 private schools in CA

North Bridge Academy

Middle School

17 BUENA VISTA 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

68

Student-Teacher

5.2:1

Score

6.0

Grades

2nd – 8th

Updated 2021-22

How this school compares

In Mill Valley

#4 of 4

public schools

California middle schools

#28 of 45

About North Bridge Academy

North Bridge Academy serves 68 students in grades 2-8 in Mill Valley, California, delivering education with an exceptionally small class environment featuring a 5.2:1 student-teacher ratio. With 13 full-time equivalent teachers, this public middle school provides personalized attention that contributes to its strong MySchoolScout rating of 9.0 out of 10. The school ranks #519 out of 1,790 California schools, placing it in the 71st percentile statewide.

This performance reflects the school's commitment to academic excellence in its intimate learning environment where individual student needs can be closely addressed. Located on Buena Vista Avenue, North Bridge Academy sits within one of Marin County's most affluent communities. The surrounding ZIP code 94941 is home to 32,190 residents with a median household income of $206,580 and median home values reaching $1,798,100.

The highly educated local population, with 78% holding bachelor's degrees or higher and a low poverty rate of 5.5%, creates a supportive academic environment. The school's small enrollment allows for a tight-knit community atmosphere while maintaining the resources and expertise of a full teaching staff. North Bridge Academy operates within Mill Valley's large suburban setting, offering families access to quality public education in one of Northern California's most desirable communities.

What Parents Should Know

With an enrollment of 68 students, North Bridge Academy is a smaller school where families often find a close-knit community atmosphere. Smaller settings can mean more individual attention from teachers and staff, though they may offer fewer extracurricular options than larger schools.

With a student-teacher ratio of 5.2:1, North Bridge Academy 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, North Bridge Academy 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
$43,303
Per-Pupil Revenue
Total revenue ÷ enrollment
$52,092
Financial Health
Revenue-to-expense ratio (>1.0 = surplus)
1.20x — Strong
Tuition Dependency
Share of revenue from program services (tuition, fees)
79%
Total Assets
End-of-year total assets from IRS filing
$3.4M

Financial data from IRS Form 990 filings via ProPublica Nonprofit Explorer. Per-pupil figures based on current enrollment of 68 students. Not all private schools file Form 990.

Compare to Public Schools

Beta

How North Bridge Academy compares to 6 public schools serving similar grades in Mill Valley, CA

Student-Teacher Ratio
5.2:1
This School
vs
19.7:1
Public Avg
Avg School Size
68
This School
vs
380
Public Avg
Avg School Scout Rating
6.0
This School
vs
8.3
Public Avg

Student Demographics

White 88.2% vs 0%
Asian 2.9% vs 0%
North Bridge Academy Mill Valley Public Avg

Nearby Middle Schools

School Rating
North Bridge Academy (this school) 6.0
Old Mill Elementary 7.8
Park Elementary 9.0
Mill Valley Middle 8.6
Edna Maguire Elementary 6.4
Strawberry Point Elementary 8.9
Tamalpais Valley Elementary 9.3

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 9.4 / 10
View breakdown
Student-Teacher Ratio 5.2:1
Instructional Commitment
? Total annual instructional hours based on school day length and days per year. (15% of overall score)
C+ 3.9 / 10
View breakdown
School Day Length 6.5 hours
Annual Instructional Hours 1,137.5
Diversity & Inclusion
? Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
C 3.4 / 10
View breakdown
Diversity Index 21%
Community Context

Data Unavailable

School Profile
? Enrollment size and grade span breadth — indicators of program depth and peer community. (15% of overall score)
B- 4.5 / 10
View breakdown
Enrollment 68
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 88.2%
Two or More 8.8%
Asian 2.9%

Source: NCES Private School Survey (PSS)

Location

17 BUENA VISTA AVE, Mill Valley, CA 94941

Nearby Alternatives

Families considering North Bridge Academy may also want to explore other middle schools in the area. Park Elementary (rated 9.0/10, 0.5 miles away), which scores notably higher. Another option is Tamalpais High (rated 8.8/10, 1.4 miles away), which scores notably higher. Additionally, Mill Valley Middle (rated 8.6/10, 1.2 miles away), which scores notably higher. For more schools in Mill Valley, see our Mill Valley schools guide .

Nearby Schools

20 within 2.3 mi
School Distance Rating
North Bridge Academy Mill Valley 0.0 mi
Old Mill Elementary Mill Valley 0.4 mi 7.8
Park Elementary Mill Valley 0.5 mi 9.0
MARIN HORIZON SCHOOL Mill Valley 0.7 mi 7.5
Marin Horizon School Mill Valley 0.7 mi
Mill Valley Middle Mill Valley 1.2 mi 8.6
THE HELIX SCHOOL Mill Valley 1.1 mi
Edna Maguire Elementary Mill Valley 1.2 mi 6.4
MOUNT TAMALPAIS SCHOOL Mill Valley 1.4 mi 6.9
Mount Tamalpais School Mill Valley 1.4 mi
Tamalpais High Mill Valley 1.4 mi 8.8
TERRA MARIN SCHOOL Mill Valley 1.3 mi 7.9
Terra Marin School Mill Valley 1.7 mi
MARIN PRIMARY & MIDDLE SCHOOL Larkspur 1.7 mi 7.2
OAc San Francisco Larkspur 1.7 mi
Chronos Academy Lakspur 1.7 mi
ST PATRICK SCHOOL Larkspur 2.0 mi 7.2
Neil Cummins Elementary Corte Madera 2.0 mi 5.9
San Andreas High (Continuation) Larkspur 2.2 mi 7.8
Tamiscal High (Alternative) Larkspur 2.3 mi 4.0

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 North Bridge Academy 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
HOPE CHRISTIAN ACADEMY Lancaster, CA 6.1
LEPORT SCHOOLS - IRVINE SPECTRUM NORTH CAMPUS Irvine, CA 5.9
PATHWAY SCHOOL INC. Laguna Hills, CA 5.9
SACRED HEART NATIVTY SCHOOLS San Jose, CA 5.9
ATHENA ACADEMY Palo Alto, CA 6.2
Julian Junior High Julian, CA 6.2

Frequently Asked Questions

Common questions about North Bridge Academy

What grades does North Bridge Academy serve?

North Bridge Academy serves students in grades 2nd through 8th.

How many students attend North Bridge Academy?

North Bridge Academy has an enrollment of approximately 68 students.

What is the student-teacher ratio at North Bridge Academy?

The student-teacher ratio at North Bridge Academy is 5.2:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does North Bridge Academy rank in CA?

North Bridge Academy is ranked #1071 out of 1,790 private schools in CA.

What is North Bridge Academy's MySchoolScout rating?

North Bridge Academy has a composite rating of 6.0 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 North Bridge Academy a private school?

Yes, North Bridge Academy 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 North Bridge Academy a religious school?

No, North Bridge Academy 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
2nd – 8th
Enrollment
68
Gender Split
63% M / 37% F
Student-Teacher Ratio
5.2:1
Teachers (FTE)
13
Type
private
Coed Status
coed
Affiliation
Nonsectarian
School Day
6.5 hours
Days Per Year
175 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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