[+] Show Closed Private Schools in Contra Costa County, California

Overview

Trends in Total Number of Private Schools

Year	Contra Costa County Total Schools
2025	133
2024	139
2023	131
2022	126
2021	130
2020	135
2019	127
2018	129
2017	124
2016	129
2015	132

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Private schools down 6 in Contra Costa County, from 139 in 2024 to 133 in 2025.

# Students

19,627 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	Contra Costa County Average	California (CA) Average	National Average
2025	163	180	179
2024	159	175	172
2023	173	181	174
2022	167	189	185
2021	162	185	180
2020	158	179	171
2019	168	179	175
2018	162	173	172
2017	172	179	180
2016	170	173	178
2015	161	162	167

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Average class size down 7 students in Contra Costa County private schools, from 170 in 2016 to 163 in 2025.

% Average Students of Color

51%

52%

View Data

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

Percentage of Students of Color Trends (2015-2025)

Year	Contra Costa County Average	California (CA) Average	National Average
2025	50%	51%	34%
2024	49%	51%	34%
2023	52%	50%	33%
2022	49%	48%	33%
2021	49%	48%	32%
2020	46%	48%	32%
2019	45%	48%	31%
2018	44%	47%	31%
2017	46%	50%	32%
2016	44%	49%	32%
2015	43%	49%	32%

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Students of color near 50% in Contra Costa County private schools, rising from 44% in 2016 to 50% in 2025 while California was 51%.

Academics and Faculty:

# Teachers

1,666 Teachers

55,835 Teachers

Average Student-Teacher Ratio

12:1

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

Student-Teacher Ratio Trends (2015-2025)

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

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% Average Faculty w/Advanced Degree

49%

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	Contra Costa County Average	California (CA) Average	National Average
2025	48%	59%	55%
2024	48%	58%	54%
2023	50%	58%	54%
2022	51%	59%	54%
2021	50%	59%	54%
2020	49%	58%	54%
2019	44%	58%	53%
2018	45%	58%	53%
2017	45%	58%	53%
2016	44%	57%	52%
2015	44%	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	Contra Costa County Average	California (CA) Average	National Average
2025	16	17	16
2024	16	17	15
2023	16	17	15
2022	16	17	15
2021	16	17	15
2020	15	17	15
2019	15	17	15
2018	16	17	15
2017	16	17	15
2016	16	17	15
2015	17	17	15

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Average Number of AP Courses

31 courses

15 courses

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

Trends in Average Number of AP Courses Offered

Year	Contra Costa County Average	California (CA) Average	National Average
2025	30	15	13
2024	14	14	12
2023	12	13	11
2022	10	13	11
2021	10	13	11
2020	9	13	11
2019	9	13	11
2018	9	13	11
2017	8	12	10
2016	7	12	10
2015	6	11	10

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Average SAT score

1276

(Out of 1600)

1267

View Data

SAT Score Trends (2020-2023)

Year	Contra Costa County Average	California (CA) Average	National Average
2023	1276	1246	1228
2022	1329	1250	1229
2021	1329	1249	1229
2020	1329	1244	1226

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Average ACT score

(Out of 36)

Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$17,290

$17,602

View Data

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

Tuition Cost Trends (2015-2025)

Year	Contra Costa County Average	California (CA) Average	National Average
2025	$16,689	$17,164	$13,580
2024	$16,041	$16,732	$13,227
2023	$15,409	$16,056	$12,716
2022	$14,727	$15,237	$12,216
2021	$13,966	$14,862	$11,969
2020	$13,690	$14,273	$11,683
2019	$12,779	$13,914	$11,449
2018	$12,548	$13,607	$11,183
2017	$12,296	$13,197	$10,900
2016	$12,091	$12,780	$10,523
2015	$11,381	$12,173	$10,108

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Tuition up 38% in Contra Costa County, rising from $12,990 in 2016 to $17,930 in 2025.

Average Summer Program Cost

$1,006

$1,072

View Data

Summer Program Cost Trends (2023-2025)

Year	Contra Costa County Average	California (CA) Average	National Average
2025	$1,006	$1,044	$1,152
2024	$859	$999	$1,128
2023	$740	$1,039	$1,156

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Average % on Financial Aid

32%

29%

View Data

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

Percent on Financial Aid Trends (2015-2025)

Year	Contra Costa County Average	California (CA) Average	National Average
2025	32%	29%	34%
2024	31%	29%	34%
2023	28%	29%	34%
2022	26%	28%	33%
2021	28%	28%	33%
2020	28%	28%	32%
2019	26%	27%	31%
2018	25%	27%	30%
2017	24%	27%	30%
2016	25%	26%	29%
2015	23%	25%	28%

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Financial aid up 7 points in Contra Costa County private schools, rising from 25% in 2016 to 32% in 2025.

Average Financial Aid Grant

$11,588

$9,656

View Data

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

Financial Aid Grant Trends (2015-2025)

Year	Contra Costa County Average	California (CA) Average	National Average
2025	$10,534	$8,932	$7,073
2024	$9,418	$8,712	$6,930
2023	$9,605	$8,186	$6,469
2022	$8,338	$8,205	$6,289
2021	$8,164	$7,081	$6,055
2020	$8,770	$6,794	$5,921
2019	$6,054	$6,413	$5,795
2018	$6,122	$5,977	$5,456
2017	$6,122	$5,752	$5,319
2016	$6,022	$5,279	$5,105
2015	$5,377	$5,100	$5,030

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Average Acceptance Rate

84%

83%

View Data

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

Acceptance Rate Trends (2015-2025)

Year	Contra Costa County Average	California (CA) Average	National Average
2025	84%	83%	85%
2024	82%	84%	85%
2023	82%	84%	85%
2022	81%	84%	85%
2021	82%	84%	85%
2020	81%	84%	85%
2019	80%	84%	85%
2018	80%	84%	85%
2017	80%	85%	85%
2016	81%	84%	85%
2015	83%	84%	85%

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Average Endowment Size

$27 million

$18.27 million

Students by Ethnicity:

0.73

0.74

View Data

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

Diversity Score Trends

Year	Contra Costa County Average	California (CA) Average	National Average
2025	0.73	0.74	0.65
2024	0.73	0.74	0.65
2023	0.74	0.74	0.65
2022	0.72	0.73	0.64
2021	0.72	0.73	0.64
2020	0.73	0.73	0.64
2019	0.71	0.73	0.63
2018	0.70	0.73	0.63
2017	0.68	0.72	0.61
2016	0.68	0.72	0.61
2015	0.68	0.72	0.61

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Diversity score up 0.05 in Contra Costa County private schools, rising from 0.68 in 2016 to 0.73 in 2025.

# American Indian Students

36 Students

3,574 Students

% American Indian Students

<1%

View Data

Percentage of Private School Students of American Indian Trends

Year	Contra Costa County Average	California (CA) Average	National Average
2019	1%	2%	1%
2018	1%	1%	2%
2017	1%	1%	1%
2016	1%	1%	1%
2015	1%	2%	1%

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# Asian Students

1,698 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	Contra Costa County Average	California (CA) Average	National Average
2025	9%	11%	5%
2024	10%	11%	5%
2023	8%	11%	5%
2022	9%	10%	4%
2021	9%	10%	4%
2020	9%	10%	4%
2019	8%	10%	4%
2018	8%	10%	4%
2017	9%	10%	4%
2016	9%	10%	4%
2015	8%	10%	4%

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# Hispanic Students

2,410 Students

104,405 Students

% Hispanic Students

13%

16%

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

Hispanic Student Percentage Trends

Year	Contra Costa County Average	California (CA) Average	National Average
2025	13%	16%	9%
2024	13%	16%	9%
2023	15%	16%	9%
2022	13%	16%	8%
2021	13%	16%	9%
2020	14%	16%	9%
2019	14%	16%	8%
2018	14%	17%	8%
2017	12%	17%	8%
2016	12%	17%	8%
2015	11%	17%	8%

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Hispanic share up 1 point in Contra Costa County private schools, from 12% in 2016 to 13% in 2025.

# Black Students

1,253 Students

30,221 Students

% Black Students

View Data

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

Black Student Percentage Trends

Year	Contra Costa County Average	California (CA) Average	National Average
2025	7%	5%	7%
2024	7%	5%	7%
2023	7%	5%	8%
2022	6%	4%	7%
2021	6%	5%	7%
2020	6%	5%	8%
2019	6%	4%	7%
2018	6%	4%	7%
2017	6%	5%	7%
2016	7%	5%	7%
2015	7%	5%	8%

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# White Students

7,347 Students

235,730 Students

% White Students

39%

37%

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

White Student Percentage Trends

Year	Contra Costa County Average	California (CA) Average	National Average
2025	39%	37%	52%
2024	38%	37%	52%
2023	36%	38%	52%
2022	41%	40%	54%
2021	41%	40%	54%
2020	41%	40%	54%
2019	46%	41%	56%
2018	47%	41%	56%
2017	50%	43%	58%
2016	49%	43%	58%
2015	50%	43%	58%

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White share down 10 points in Contra Costa County private schools, from 49% in 2016 to 39% in 2025.

# Hawaiian Students

263 Students

5,499 Students

% Hawaiian Students

# Others Students

5,864 Students

188,723 Students

% of Others Students

31%

29%

View Data

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

Other Races Student Percentage Trends

Year	Contra Costa County Average	California (CA) Average	National Average
2025	31%	29%	26%
2024	31%	29%	26%
2023	32%	28%	25%
2022	29%	28%	25%
2021	29%	27%	25%
2020	28%	27%	24%
2019	24%	26%	24%
2018	23%	26%	23%
2017	22%	24%	22%
2016	22%	24%	22%
2015	23%	23%	21%

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Other-race share up 9 points in Contra Costa private schools, rising from 22% in 2016 to 31% in 2025.

All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars

8 extracurriculars

9 extracurriculars

Average Number of Sports

7 sports

Frequently Asked Questions

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

The private schools in Contra Costa County, CA include The Athenian School, Bentley School, and Carondelet High School.

How many private schools are located in Contra Costa County?

126 private schools are located in Contra Costa County.

How much do private schools cost in Contra Costa County?

The average tuition cost is $17,290, which is lower than the California private school average tuition cost of $17,602.

How diverse are private schools in Contra Costa County?

Contra Costa County private schools are approximately 51% minority students, which is lower than the California private school average of 52%.

What percentage of students in Contra Costa County go to private school?

11% of all K-12 students in Contra Costa County are educated in private schools (compared to the CA state average of 10%).

What percentage of private schools are religiously affiliated in Contra Costa County?

35% of private schools in Contra Costa County are religiously affiliated (most commonly Catholic and Christian).

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

Popular comparisons of private schools in Contra Costa County include: Railroad Junction vs. Pittsburg KinderCare, Brentwood KinderCare vs. Montessori School Of Brentwood, Pittsburg KinderCare vs. Railroad Junction

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