Home > California

Best Marin County �� High Schools (2026)

[+] Show Closed �� Schools in Marin County, California

Marin County �� Schools (Closed)

School

Location

Quick Facts

Caulbridge School (Closed 2024)

Special Program Emphasis

1 St Vincent Drive
San Rafael, CA 94903
(415) 481-1243

Gr: PK-8 | 192 students Avg. class size: 14 students Tuition & acceptance rate listed

The Marin School (Closed 2023)

150 N. San Pedro Road
San Rafael, CA 94903
(415) 339-9336

Gr: 9-12 | 76 students Avg. class size: 8 students Tuition & acceptance rate listed

Real School (Closed 2013)

Alternative School

102 Eye St
San Rafael, CA 94901
(415) 383-7573

Gr: 7-8 | 4 students

Ring Mountain School (Closed 2022)

70 Lomita Dr
Mill Valley, CA 94941
(415) 381-8183

Gr: K-8 | 99 students

Sparrow Creek School (Closed 2019)

Montessori School

304 Caledonia St
Sausalito, CA 94965
(415) 324-7000

Gr: PK-K | 23 students

Overview

This County (Marin County)

This State (CA)

# Schools

16 Schools

View Data

Trends in Total Number of �� High Schools
Year	Marin County Total Schools
2025	16
2024	17
2023	15
2022	14
2021	13
2020	15
2019	15
2018	17
2017	17
2016	17
2015	15

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Student Body:

# Students

3,452 Students

275,247 Students

View Data

Trends in the Average Number of Students Per �� High School
Year	Marin County Average	California (CA) Average	National Average
2025	230	254	253
2024	219	249	245
2023	238	261	247
2022	233	270	257
2021	233	265	249
2020	229	250	235
2019	242	246	242
2018	214	234	238
2017	200	242	246
2016	201	230	241
2015	202	205	220

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

% Average Students of Color

31%

49%

View Data

Percentage of Students of Color Trends (2015-2025)
Year	Marin County Average	California (CA) Average	National Average
2025	31%	49%	32%
2024	22%	48%	31%
2023	32%	47%	31%
2022	21%	43%	30%
2021	17%	43%	30%
2020	12%	42%	29%
2019	20%	44%	29%
2018	15%	42%	28%
2017	26%	48%	30%
2016	25%	48%	30%
2015	25%	48%	30%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Academics and Faculty:

# Teachers

408 Teachers

26,865 Teachers

Average Student-Teacher Ratio

8:1

10:1

View Data

Student-Teacher Ratio Trends (2015-2025)
Year	Marin County Average	California (CA) Average	National Average
2025	8:1	10:1	10:1
2024	8:1	10:1	10:1
2023	9:1	10:1	10:1
2022	8:1	10:1	10:1
2021	8:1	10:1	10:1
2020	8:1	11:1	10:1
2019	9:1	10:1	10:1
2018	9:1	11:1	10:1
2017	8:1	11:1	10:1
2016	8:1	11:1	10:1
2015	9:1	11:1	10:1

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

% Average Faculty w/Advanced Degree

64%

61%

View Data

Percentage of Faculty With Advanced Degrees Trends (2015-2025)
Year	Marin County Average	California (CA) Average	National Average
2025	64%	61%	57%
2024	61%	61%	57%
2023	66%	60%	57%
2022	82%	61%	56%
2021	80%	61%	56%
2020	85%	60%	56%
2019	83%	59%	55%
2018	83%	60%	55%
2017	83%	60%	55%
2016	71%	59%	54%
2015	71%	59%	54%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Class Size

10 students

15 students

View Data

Class Size Trends (2015-2025)
Year	Marin County Average	California (CA) Average	National Average
2025	10	15	14
2024	9	14	14
2023	10	14	14
2022	9	14	14
2021	10	14	14
2020	11	14	14
2019	11	14	14
2018	11	14	14
2017	10	14	14
2016	12	15	14
2015	13	15	14

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Number of AP Courses

38 courses

15 courses

View Data

Trends in Average Number of AP Courses Offered
Year	Marin County Average	California (CA) Average	National Average
2025	38	15	13
2024	18	14	12
2023	20	14	12
2022	18	14	12
2021	23	14	12
2020	23	13	12
2019	23	13	11
2018	23	13	11
2017	15	12	11
2016	8	12	11
2015	15	11	10

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$34,712

$23,315

View Data

Tuition Cost Trends (2015-2025)
Year	Marin County Average	California (CA) Average	National Average
2025	$34,712	$23,319	$17,997
2024	$37,298	$23,084	$17,011
2023	$29,572	$21,930	$16,191
2022	$34,301	$21,484	$15,821
2021	$34,899	$20,840	$15,331
2020	$32,718	$19,942	$15,046
2019	$32,718	$19,419	$14,791
2018	$34,178	$18,892	$14,527
2017	$34,603	$18,534	$14,161
2016	$26,872	$17,628	$13,713
2015	$28,470	$15,924	$13,065

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Summer Program Cost

$4,050

$1,500

View Data

Summer Program Cost Trends (2021-2025)
Year	Marin County Average	California (CA) Average	National Average
2025	$4,050	$1,500	$1,513
2024	$4,050	$1,407	$1,498
2023	$3,100	$1,640	$1,623
2022	$4,439	$1,441	$1,473
2021	$5,777	$1,251	$1,580

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average % on Financial Aid

25%

33%

View Data

Percent on Financial Aid Trends (2015-2025)
Year	Marin County Average	California (CA) Average	National Average
2025	25%	33%	38%
2024	26%	33%	37%
2023	24%	31%	36%
2022	25%	32%	36%
2021	27%	32%	36%
2020	28%	31%	35%
2019	28%	30%	34%
2018	28%	31%	33%
2017	28%	30%	32%
2016	29%	29%	31%
2015	31%	28%	30%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Average Acceptance Rate

71%

78%

View Data

Acceptance Rate Trends (2015-2025)
Year	Marin County Average	California (CA) Average	National Average
2025	71%	78%	79%
2024	60%	80%	81%
2022	60%	80%	81%
2021	60%	81%	81%
2020	60%	81%	81%
2019	50%	80%	81%
2018	50%	80%	80%
2017	45%	79%	81%
2016	43%	79%	80%
2015	33%	79%	81%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Students by Ethnicity:

0.59

0.73

View Data

Diversity Score Trends
Year	Marin County Average	California (CA) Average	National Average
2025	0.59	0.73	0.61
2024	0.59	0.73	0.60
2023	0.58	0.72	0.60
2022	0.47	0.69	0.58
2021	0.41	0.69	0.57
2020	0.45	0.69	0.57
2019	0.44	0.69	0.56
2018	0.44	0.69	0.55
2017	0.47	0.68	0.54
2016	0.45	0.69	0.54
2015	0.44	0.69	0.53

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# American Indian Students

40 Students

1,844 Students

% American Indian Students

View Data

Percentage of �� High School Students of American Indian Trends
Year	Marin County Average	California (CA) Average	National Average
2025	2%	1%	1%
2024	2%	1%	1%
2023	1%	1%	1%
2022	2%	1%	1%
2021	1%	1%	1%
2020	1%	1%	1%
2019	2%	1%	1%
2018	2%	1%	1%
2017	1%	1%	1%
2016	1%	1%	1%
2015	1%	2%	1%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Asian Students

145 Students

35,016 Students

% Asian Students

13%

View Data

Asian Student Percentage Trends
Year	Marin County Average	California (CA) Average	National Average
2025	4%	13%	5%
2024	4%	14%	6%
2023	4%	13%	6%
2022	3%	11%	5%
2021	4%	11%	5%
2020	4%	11%	5%
2019	5%	11%	5%
2018	5%	11%	5%
2017	3%	10%	4%
2016	4%	10%	4%
2015	4%	10%	4%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Hispanic Students

177 Students

43,318 Students

% Hispanic Students

16%

View Data

Hispanic Student Percentage Trends
Year	Marin County Average	California (CA) Average	National Average
2025	5%	16%	9%
2024	5%	16%	9%
2023	5%	16%	8%
2022	3%	16%	8%
2021	3%	16%	8%
2020	4%	16%	8%
2019	3%	16%	8%
2018	3%	16%	8%
2017	6%	17%	7%
2016	5%	18%	8%
2015	6%	18%	8%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Black Students

92 Students

15,939 Students

% Black Students

View Data

Black Student Percentage Trends
Year	Marin County Average	California (CA) Average	National Average
2025	3%	6%	8%
2024	3%	6%	8%
2023	2%	6%	8%
2022	2%	6%	8%
2021	2%	6%	8%
2020	2%	6%	8%
2019	2%	6%	8%
2018	2%	6%	8%
2017	2%	6%	8%
2016	2%	6%	8%
2015	2%	7%	9%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# White Students

1,914 Students

115,884 Students

% White Students

56%

44%

View Data

White Student Percentage Trends
Year	Marin County Average	California (CA) Average	National Average
2025	56%	44%	59%
2024	57%	44%	60%
2023	58%	46%	60%
2022	70%	50%	62%
2021	76%	50%	63%
2020	72%	51%	64%
2019	73%	50%	64%
2018	73%	51%	65%
2017	70%	51%	66%
2016	72%	50%	66%
2015	73%	50%	66%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Hawaiian Students

10 Students

2,957 Students

% Hawaiian Students

n/a

# Two or more races Students

n/a

% of Two or more races Students

n/a

# Others Students

1,037 Students

49,028 Students

% of Others Students

31%

19%

View Data

Other Races Student Percentage Trends
Year	Marin County Average	California (CA) Average	National Average
2025	30%	19%	17%
2024	29%	18%	15%
2023	30%	17%	16%
2022	20%	15%	16%
2021	14%	15%	15%
2020	17%	14%	14%
2019	15%	15%	14%
2018	15%	14%	13%
2017	18%	15%	14%
2016	16%	15%	13%
2015	14%	13%	12%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full County Data : Full County Dataset XML | Full County Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

17 extracurriculars

14 extracurriculars

Average Number of Sports

8 sports

10 sports

Frequently Asked Questions

What are the top-ranked private high schools in Marin County, CA?

The private high schools in Marin County, CA include Marin Catholic High School, Marin Christian Academy, and Headlands Preparatory School.

How many private high schools are located in Marin County?

16 private high schools are located in Marin County.

How much do private high schools cost in Marin County?

The average tuition cost is $34,712, which is higher than the California private school average tuition cost of $23,315.

How diverse are private high schools in Marin County?

Marin County private high schools are approximately 31% minority students, which is lower than the California private school average of 49%.

What percentage of private high schools are religiously affiliated in Marin County?

19% of private high schools in Marin County are religiously affiliated (most commonly Assembly of God and Catholic).

Which private high schools in Marin County are often viewed compared to one another?

Popular comparisons of private high schools in Marin County include: The Branson School vs. Marin Academy, Marin Academy vs. The Branson School, Headlands Preparatory School vs. San Domenico School

Recent Articles

January 30, 2026

How Global Economic Trends Shape �� School Affordability

Explore how global economic trends influence private school affordability and enrollment in 2026, with insights for families and educators.

January 29, 2026

Parent Engagement in �� Schools in 2026

Explore how parent engagement in private schools builds strong communities, support networks, and student success in 2026.

January 29, 2026

So Many Choices: Navigating �� School Selection in 2026

A 2026 parent guide to choosing the right private school, with updated admissions timelines, tuition trends, affordability strategies, and expert insights.