[+] 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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The number of private schools in Contra Costa County rose from 129 in 2016 to 133 in 2025.

# Students

19,627 Students

659,679 Students

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Showing 2016–2025. View full 11-year historical data

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 Students of Color

51%

52%

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Showing 2016–2025. View full 11-year historical data

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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The share of students of color in Contra Costa County private schools rose from 44% in 2016 to 50% in 2025.

Academics and Faculty:

# Teachers

1,666 Teachers

55,864 Teachers

Average Student-Teacher Ratio

12:1

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Showing 2016–2025. View full 11-year historical data

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 student-teacher ratio in Contra Costa County was 12:1 in 2025, equal to California and 1 higher than the national ratio of 11:1.

% Average Faculty w/Advanced Degree

50%

60%

View Data

Showing 2016–2025. View full 11-year historical data

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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The average percentage of faculty with advanced degrees in Contra Costa County was 48% in 2025, 11 points lower than California’s 59%.

Average Class Size

16 students

17 students

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Showing 2016–2025. View full 11-year historical data

Class Size Trends (2015-2025)

Year	Contra Costa County Average	California (CA) Average	National Average
2025	16	17	15
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

15 courses

Average SAT score

1276

(Out of 1600)

1267

Average ACT score

(Out of 36)

Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$19,244

$18,535

View Data

Showing 2016–2025. View full 11-year historical data

Tuition Cost Trends (2015-2025)

Year	Contra Costa County Median	California (CA) Median	National Median
2025	$12,050	$11,900	$8,480
2024	$11,199	$11,360	$8,100
2023	$10,490	$10,836	$7,707
2022	$10,460	$10,000	$7,500
2021	$10,249	$9,875	$7,250
2020	$11,599	$9,800	$7,030
2019	$11,264	$9,800	$7,000
2018	$8,100	$9,150	$6,800
2017	$9,415	$8,870	$6,570
2016	$11,015	$8,500	$6,375
2015	$11,330	$7,988	$6,000

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Each figure is the median of the individual reporting schools in that year. The reporting schools can vary from year to year, so a change in the median is not the change experienced by the same schools.

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Median tuition in Contra Costa County rose from $11,015 in 2016 to $12,050 in 2025, and it remained higher than the California median of $11,900.

Average Summer Program Cost

$1,006

$1,075

Average % on Financial Aid

32%

30%

View Data

Showing 2016–2025. View full 11-year historical data

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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Average financial aid in Contra Costa County rose from 25% in 2016 to 32% in 2025, while the California average increased from 26% to 29%.

Average Financial Aid Grant

$11,588

$9,660

View Data

Showing 2016–2025. View full 11-year historical data

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

82%

84%

View Data

Showing 2016–2025. View full 11-year historical data

Acceptance Rate Trends (2015-2025)

Year	Contra Costa County Average	California (CA) Average	National Average
2025	83%	84%	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

$10.5 million

$21.92 million

Students by Ethnicity:

0.73

0.74

View Data

Showing 2016–2025. View full 11-year historical data

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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The average diversity score for private schools in Contra Costa County was 0.73 in 2025, 0.09 higher than the national average of 0.65.

# American Indian Students

36 Students

3,574 Students

% American Indian Students

<1%

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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

71,776 Students

% Asian Students

11%

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Showing 2016–2025. View full 11-year historical data

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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The share of Asian private school students in Contra Costa County was 9% in 2025, equal to the county’s 9% in 2016 and 4 points above the national 5%.

# Hispanic Students

2,410 Students

104,400 Students

% Hispanic Students

13%

16%

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Showing 2016–2025. View full 11-year historical data

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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The Hispanic share of private school students in Contra Costa County was 13% in 2025, 3 points below California’s 16%.

# Black Students

1,253 Students

30,215 Students

% Black Students

View Data

Showing 2016–2025. View full 11-year historical data

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

235,682 Students

% White Students

39%

37%

View Data

Showing 2016–2025. View full 11-year historical data

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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The share of White private school students in Contra Costa County fell from 49% in 2016 to 39% in 2025.

# Hawaiian Students

263 Students

5,499 Students

% Hawaiian Students

# Others Students

5,864 Students

188,785 Students

% of Others Students

31%

29%

View Data

Showing 2016–2025. View full 11-year historical data

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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The share of private school students identifying as other races in Contra Costa County rose 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 De La Salle 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 $19,244, which is higher than the California private school average tuition cost of $18,535.

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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