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

Marin County Private Schools (Closed)

Caulbridge School

Gr: PK-8 | 192 students

Avg. class size: 14 students

Specialized Curriculum

1 St Vincent Drive

San Rafael, CA 94903

(415) 481-1243

(9)

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The Marin School

Gr: 9-12 | 76 students

Avg. class size: 8 students

150 N. San Pedro Road

San Rafael, CA 94903

(415) 339-9336

(3)

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Real School

Gr: 7-8 | 4 students

Alternative School

102 Eye St

San Rafael, CA 94901

(415) 383-7573

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Ring Mountain School

Gr: K-8 | 99 students

70 Lomita Dr

Mill Valley, CA 94941

(415) 381-8183

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Sparrow Creek School

Gr: PK-K | 23 students

Montessori School

304 Caledonia St

Sausalito, CA 94965

(415) 324-7000

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Overview

Trends in Total Number of Private Schools

Year	Marin County Total Schools
2025	49
2024	51
2023	49
2022	48
2021	48
2020	50
2019	49
2018	52
2017	51
2016	50
2015	49

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# Students

8,736 Students

659,577 Students

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Showing 2016–2025. Full 11-year historical data available below ↓

Trends in the Average Number of Students Per Private School

Year	Marin County Average	California (CA) Average	National Average
2025	184	180	179
2024	179	175	172
2023	180	181	174
2022	181	189	185
2021	178	185	180
2020	178	179	171
2019	181	179	175
2018	173	173	172
2017	177	179	180
2016	173	173	178
2015	176	162	167

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% Average Students of Color

26%

52%

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Showing 2016–2025. Full 11-year historical data available below ↓

Percentage of Students of Color Trends (2015-2025)

Year	Marin County Average	California (CA) Average	National Average
2025	26%	51%	34%
2024	22%	51%	34%
2023	27%	50%	33%
2022	25%	48%	33%
2021	20%	48%	32%
2020	19%	48%	32%
2019	22%	48%	31%
2018	20%	47%	31%
2017	23%	50%	32%
2016	23%	49%	32%
2015	24%	49%	32%

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Academics and Faculty:

# Teachers

1,073 Teachers

55,835 Teachers

Average Student-Teacher Ratio

8:1

12:1

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Showing 2016–2025. Full 11-year historical data available below ↓

Student-Teacher Ratio Trends (2015-2025)

Year	Marin County Average	California (CA) Average	National Average
2025	8:1	12:1	11:1
2024	8:1	12:1	11:1
2023	9:1	12:1	11:1
2022	8:1	12:1	11:1
2021	8:1	13:1	11:1
2020	9:1	13:1	12:1
2019	9:1	12:1	12:1
2018	9:1	12:1	12:1
2017	8:1	13:1	12:1
2016	8:1	13:1	12:1
2015	9:1	13:1	12:1

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% Average Faculty w/Advanced Degree

53%

60%

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Showing 2016–2025. Full 11-year historical data available below ↓

Percentage of Faculty With Advanced Degrees Trends (2015-2025)

Year	Marin County Average	California (CA) Average	National Average
2025	51%	59%	55%
2024	49%	58%	54%
2023	51%	58%	54%
2022	55%	59%	54%
2021	51%	59%	54%
2020	55%	58%	54%
2019	55%	58%	53%
2018	51%	58%	53%
2017	51%	58%	53%
2016	49%	57%	52%
2015	60%	57%	52%

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Average Class Size

16 students

17 students

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Showing 2016–2025. Full 11-year historical data available below ↓

Class Size Trends (2015-2025)

Year	Marin County Average	California (CA) Average	National Average
2025	16	17	15
2024	15	17	15
2023	15	17	15
2022	16	17	15
2021	16	17	15
2020	17	17	15
2019	17	17	15
2018	17	17	15
2017	17	17	15
2016	17	17	15
2015	16	17	15

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Average Number of AP Courses

31 courses

15 courses

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Trends in Average Number of AP Courses Offered

Year	Marin County Average	California (CA) Average	National Average
2025	31	15	13
2024	18	14	12
2023	20	13	11

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Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$29,016

$17,602

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Showing 2016–2025. Full 11-year historical data available below ↓

Tuition Cost Trends (2015-2025)

Year	Marin County Average	California (CA) Average	National Average
2025	$28,139	$18,076	$15,012
2024	$27,319	$17,621	$14,622
2023	$26,490	$16,909	$14,057
2022	$24,638	$16,046	$13,504
2021	$24,001	$15,652	$13,232
2020	$23,614	$15,031	$12,915
2019	$23,614	$14,653	$12,656
2018	$23,208	$14,331	$12,363
2017	$22,528	$13,898	$12,049
2016	$21,589	$13,459	$11,633
2015	$20,574	$12,820	$11,174

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Average Summer Program Cost

$3,200

$1,072

Average % on Financial Aid

28%

29%

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Percent on Financial Aid Trends (2015-2025)

Year	Marin County Average	California (CA) Average	National Average
2025	28%	29%	34%
2024	29%	29%	34%
2023	30%	29%	34%
2022	30%	28%	33%
2021	29%	28%	33%
2020	26%	28%	32%
2019	26%	27%	31%
2018	25%	27%	30%
2017	24%	27%	30%
2016	25%	26%	29%
2015	24%	25%	28%

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Average Financial Aid Grant

$13,988

$9,656

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Showing 2016–2025. Full 11-year historical data available below ↓

Financial Aid Grant Trends (2015-2025)

Year	Marin County Average	California (CA) Average	National Average
2025	$13,988	$8,932	$7,073
2024	$17,366	$8,712	$6,930
2023	$14,616	$8,186	$6,469
2022	$12,868	$8,205	$6,289
2021	$10,930	$7,081	$6,055
2020	$11,134	$6,794	$5,921
2019	$11,134	$6,413	$5,795
2018	$10,829	$5,977	$5,456
2017	$10,829	$5,752	$5,319
2016	$9,079	$5,279	$5,105
2015	$8,947	$5,100	$5,030

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Average Acceptance Rate

79%

83%

View Data

Acceptance Rate Trends (2019-2025)

Year	Marin County Average	California (CA) Average	National Average
2025	76%	80%	81%
2024	75%	84%	85%
2023	81%	84%	85%
2022	74%	84%	85%
2021	74%	84%	85%
2020	81%	84%	85%
2019	79%	84%	85%

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Average Endowment Size

$4.2 million

$18.27 million

Students by Ethnicity:

0.60

0.74

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Diversity Score Trends

Year	Marin County Average	California (CA) Average	National Average
2025	0.60	0.74	0.65
2024	0.60	0.74	0.65
2023	0.58	0.74	0.65
2022	0.55	0.73	0.64
2021	0.54	0.73	0.64
2020	0.55	0.73	0.64
2019	0.54	0.73	0.63
2018	0.55	0.73	0.63
2017	0.56	0.72	0.61
2016	0.55	0.72	0.61
2015	0.54	0.72	0.61

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# American Indian Students

133 Students

3,574 Students

% American Indian Students

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Percentage of Private School Students of American Indian Trends

Year	Marin County Average	California (CA) Average	National Average
2025	3%	1%	1%
2024	2%	1%	1%
2023	2%	1%	1%
2022	2%	1%	2%
2021	3%	1%	1%
2020	3%	1%	1%
2019	2%	2%	1%
2018	2%	1%	2%
2017	2%	1%	1%
2016	2%	1%	1%
2015	2%	2%	1%

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# Asian Students

327 Students

71,777 Students

% Asian Students

11%

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Showing 2016–2025. Full 11-year historical data available below ↓

Asian Student Percentage Trends

Year	Marin County Average	California (CA) Average	National Average
2025	4%	11%	5%
2024	4%	11%	5%
2023	4%	11%	5%
2022	3%	10%	4%
2021	3%	10%	4%
2020	3%	10%	4%
2019	4%	10%	4%
2018	4%	10%	4%
2017	4%	10%	4%
2016	4%	10%	4%
2015	3%	10%	4%

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# Hispanic Students

684 Students

104,405 Students

% Hispanic Students

16%

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Showing 2016–2025. Full 11-year historical data available below ↓

Hispanic Student Percentage Trends

Year	Marin County Average	California (CA) Average	National Average
2025	8%	16%	9%
2024	8%	16%	9%
2023	8%	16%	9%
2022	7%	16%	8%
2021	7%	16%	9%
2020	7%	16%	9%
2019	8%	16%	8%
2018	8%	17%	8%
2017	8%	17%	8%
2016	8%	17%	8%
2015	8%	17%	8%

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# Black Students

291 Students

30,221 Students

% Black Students

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Black Student Percentage Trends

Year	Marin County Average	California (CA) Average	National Average
2025	3%	5%	7%
2024	3%	5%	7%
2023	2%	5%	8%
2022	2%	4%	7%
2021	2%	5%	7%
2020	2%	5%	8%
2019	2%	4%	7%
2018	2%	4%	7%
2017	2%	5%	7%
2016	2%	5%	7%
2015	2%	5%	8%

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# White Students

4,857 Students

235,730 Students

% White Students

58%

37%

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

White Student Percentage Trends

Year	Marin County Average	California (CA) Average	National Average
2025	58%	37%	52%
2024	58%	37%	52%
2023	60%	38%	52%
2022	63%	40%	54%
2021	65%	40%	54%
2020	63%	40%	54%
2019	65%	41%	56%
2018	63%	41%	56%
2017	63%	43%	58%
2016	64%	43%	58%
2015	64%	43%	58%

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# Hawaiian Students

20 Students

5,499 Students

% Hawaiian Students

<1%

# Others Students

2,039 Students

188,723 Students

% of Others Students

24%

29%

View Data

Showing 2016–2025. Full 11-year historical data available below ↓

Other Races Student Percentage Trends

Year	Marin County Average	California (CA) Average	National Average
2025	24%	29%	26%
2024	25%	29%	26%
2023	24%	28%	25%
2022	23%	28%	25%
2021	20%	27%	25%
2020	22%	27%	24%
2019	19%	26%	24%
2018	21%	26%	23%
2017	21%	24%	22%
2016	20%	24%	22%
2015	21%	23%	21%

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All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

10 extracurriculars

9 extracurriculars

Average Number of Sports

5 sports

7 sports

Frequently Asked Questions

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

The private schools in Marin County, CA include Marin Catholic High School, The Branson School, and Terra Marin School.

How many private schools are located in Marin County?

50 private schools are located in Marin County.

How much do private schools cost in Marin County?

The average tuition cost is $29,016, which is higher than the California private school average tuition cost of $17,602.

How diverse are private schools in Marin County?

Marin County private schools are approximately 26% minority students, which is lower than the California private school average of 52%.

What percentage of students in Marin County go to private school?

22% of all K-12 students in Marin County are educated in private schools (compared to the CA state average of 10%).

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

26% of private schools in Marin County are religiously affiliated (most commonly Catholic and Christian).

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

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