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Average

#697 of 1,790 private schools in CA

Top 39% of private schools

Mark Day School

Elementary School

39 TRELLIS DR, San Rafael, CA 94903

Private Estimated Score

Estimated academic score. This school does not have standardized test data. Based on 17 schools in San Rafael. Learn more

Enrollment

392

Student-Teacher

9.6:1

Score

6.6

Grades

Kindergarten – 8th

Updated 2021-22

How this school compares

In San Rafael

#5 of 6

public schools

California elementary schools

#390 of 1,102

About Mark Day School

Mark Day School serves 392 students from kindergarten through 8th grade in San Rafael, California, offering an intimate learning environment with a student-teacher ratio of 9.6:1. This regular public elementary school earns strong recognition with a 9.0 out of 10 rating from MySchoolScout and ranks #246 out of 1790 California schools, placing it in the 86th percentile statewide. The school benefits from 41 full-time equivalent teachers who work closely with students in smaller class settings.

This personalized attention supports student development across the elementary and middle school years, helping children build strong academic foundations during these crucial formative grades. Mark Day School is situated in the affluent 94903 ZIP code area, where the median household income reaches $131,172 and 54% of residents hold bachelor's degrees or higher. The neighborhood maintains a low poverty rate of 6.4%, reflecting the community's economic stability.

With median home values around $1.1 million, the area attracts families who prioritize education and community involvement. Located on Trellis Drive in San Rafael, the school serves families in this small city setting within Marin County, an area known for its commitment to quality education and family-friendly atmosphere.

What Parents Should Know

With a student-teacher ratio of 9.6:1, Mark Day 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, Mark Day 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
$48,374
Per-Pupil Revenue
Total revenue ÷ enrollment
$49,190
Financial Health
Revenue-to-expense ratio (>1.0 = surplus)
1.02x — Stable
Tuition Dependency
Share of revenue from program services (tuition, fees)
87%
Total Assets
End-of-year total assets from IRS filing
$57.5M

Financial data from IRS Form 990 filings via ProPublica Nonprofit Explorer. Per-pupil figures based on current enrollment of 392 students. Not all private schools file Form 990.

Compare to Public Schools

Beta

How Mark Day School compares to 15 public schools serving similar grades in San Rafael, CA

Student-Teacher Ratio
9.6:1
This School
vs
20.7:1
Public Avg
Avg School Size
392
This School
vs
429
Public Avg
Avg School Scout Rating
6.6
This School
vs
5.8
Public Avg

Student Demographics

White 62.8% vs 0%
Asian 8.9% vs 0%
Hispanic 5.4% vs 0%
Black 2% vs 0%
Mark Day School San Rafael Public Avg

Nearby Elementary Schools

School Rating
Mark Day School (this school) 6.6
Vallecito Elementary 6.3
Marin County Special Education 5.2
Marin's Community 4.9
Sun Valley Elementary 7.6
Marin County Juvenile Court
Miller Creek Middle 5.9
Venetia Valley K-8 4.0
Lucas Valley Elementary 5.5
Mary E. Silveira Elementary 4.0
Coleman Elementary 5.2
James B. Davidson Middle 7.1
Laurel Dell Elementary 6.5
San Pedro Elementary 6.0
Bahia Vista Elementary 6.4
Glenwood Elementary 6.9

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)
B+ 7.1 / 10
View breakdown
Student-Teacher Ratio 9.6:1
Instructional Commitment
? Total annual instructional hours based on school day length and days per year. (15% of overall score)
C+ 4.4 / 10
View breakdown
School Day Length 7 hours
Annual Instructional Hours 1,162
Diversity & Inclusion
? Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
B 6.3 / 10
View breakdown
Diversity Index 55%
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 392
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 62.8%
Two or More 20.9%
Asian 8.9%
Hispanic 5.4%
Black 2.0%

Source: NCES Private School Survey (PSS)

Location

39 TRELLIS DR, San Rafael, CA 94903

Nearby Alternatives

Families considering Mark Day School may also want to explore other elementary schools in the area. Hidden Valley Elementary (rated 8.8/10, 1.0 miles away, in nearby San Anselmo), which scores notably higher. Another option is Sun Valley Elementary (rated 7.6/10, 1.5 miles away), which scores slightly higher. Additionally, MARIN WALDORF SCHOOL (rated 7.4/10, 1.5 miles away), which scores slightly higher. For more schools in San Rafael, see our San Rafael schools guide .

Nearby Schools

20 within 1.7 mi
School Distance Rating
Mark Day School San Rafael 0.0 mi
Saint Isabella School San Rafael 0.2 mi
Vallecito Elementary San Rafael 0.2 mi 6.3
Terra Linda High San Rafael 0.5 mi 8.5
Montessori de Terra Linda San Rafael 0.5 mi
Phoenix Academy San Rafael 0.5 mi
Marin County Special Education San Rafael 0.5 mi 5.2
Marin's Community San Rafael 0.5 mi 4.9
BOOST of Cypress School San Rafael 1.0 mi
ICE CREAM & SHOE PRESCHOOL & KINDERGARTEN INC. San Rafael 1.0 mi
Hidden Valley Elementary San Anselmo 1.0 mi 8.8
Fusion Academy Marin San Rafael 1.1 mi
FUSION ACADEMY MARIN San Rafael 1.2 mi
Marin Waldorf School San Rafael 1.4 mi
STAR ACADEMY San Rafael 1.3 mi 7.1
MARIN WALDORF SCHOOL San Rafael 1.5 mi 7.4
Sun Valley Elementary San Rafael 1.5 mi 7.6
Marin County Juvenile Court San Rafael 1.6 mi
Miller Creek Middle San Rafael 1.7 mi 5.9
Irene M. Hunt School / Side by Side San Anselmo 1.7 mi

Neighborhood Census ACS (2019-2023)

Census data for ZIP 94903 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$127,464

Median Home Value

$1,149,400

Median Rent

$3,026/mo

Population

31,135

College Educated

55.1%

Homeownership

65.5%

Avg Commute

28 min

Poverty Rate

7.6%

Median Age

48.7

Community Profile

The community surrounding Mark Day School has a median household income of $127,464. It is a well-educated community where 55% of adults hold a bachelor's degree or higher. The median home value in the area is $1,149,400, with a median rent of $3,026/month. The local poverty rate of 7.6% 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
ANNELIESE SCHOOLS, INC. Laguna Beach, CA 6.6
BRIDGES Charter Thousand Oaks, CA 6.6
Blue Oak Elementary Cameron Park, CA 6.6
Blue Oaks Elementary Roseville, CA 6.6
Brea Country Hills Elementary Brea, CA 6.6
C. C. Violette Elementary Garden Grove, CA 6.6

Frequently Asked Questions

Common questions about Mark Day School

What grades does Mark Day School serve?

Mark Day School serves students in grades Kindergarten through 8th.

How many students attend Mark Day School?

Mark Day School has an enrollment of approximately 392 students.

What is the student-teacher ratio at Mark Day School?

The student-teacher ratio at Mark Day School is 9.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does Mark Day School rank in CA?

Mark Day School is ranked #697 out of 1,790 private schools in CA.

What is Mark Day School's MySchoolScout rating?

Mark Day School has a composite rating of 6.6 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 Mark Day School a private school?

Yes, Mark Day 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 Mark Day School a religious school?

No, Mark Day School is a nonsectarian (non-religious) private school.

11 schools nearby View map →

Neighborhood Context

City Safety
High (3,042/100K)

FBI UCR 2024. City-level (San Rafael). Data >1 year old.

Quick Facts NCES PSS (SY 2021-22)

Grades
Kindergarten – 8th
Enrollment
392
Gender Split
50% M / 50% F
Student-Teacher Ratio
9.6:1
Teachers (FTE)
41
Type
private
Coed Status
coed
Affiliation
Nonsectarian
School Day
7 hours
Days Per Year
166 days
Setting
Small City
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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