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

Overview

Academics and Faculty:

# Teachers

1,666 Teachers

55,630 Teachers

Average Student-Teacher Ratio

12:1

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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%

59%

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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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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

31 courses

15 courses

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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)

1264

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SAT Score Trends (2015-2025)
Year	Contra Costa County Average	California (CA) Average	National Average
2025	1280	1261	1233
2024	1273	1248	1230
2023	1276	1246	1228
2022	1329	1250	1229
2021	1329	1249	1229
2020	1329	1244	1226
2019	1324	1239	1226
2018	1324	1237	1226
2017	1324	1252	1233
2016	1187	1411	1306
2015	1187	1381	1258

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Average ACT score

(Out of 36)

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ACT Score Trends (2015-2025)
Year	Contra Costa County Average	California (CA) Average	National Average
2025	30	27	26
2024	30	27	26
2023	30	27	26
2022	28	27	26
2021	28	27	26
2020	28	26	25
2019	25	26	25
2018	25	26	25
2017	25	26	25
2016	25	26	25
2015	24	25	25

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Tuition and Acceptance Rate:

Average Yearly Tuition Cost

$17,290

$17,574

View Data

Tuition Cost Trends (2015-2025)
Year	Contra Costa County Average	California (CA) Average	National Average
2025	$17,930	$18,076	$15,012
2024	$17,234	$17,621	$14,622
2023	$16,555	$16,909	$14,057
2022	$15,822	$16,046	$13,504
2021	$15,005	$15,652	$13,232
2020	$14,708	$15,031	$12,915
2019	$13,729	$14,653	$12,656
2018	$13,481	$14,331	$12,363
2017	$13,210	$13,898	$12,049
2016	$12,990	$13,459	$11,633
2015	$12,227	$12,820	$11,174

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Average Summer Program Cost

$1,006

$1,072

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Summer Program Cost Trends (2018-2025)
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
2022	$800	$934	$1,102
2021	$233	$815	$1,125
2020	$275	$882	$1,217
2019	$275	$928	$1,305
2018	$275	$982	$1,108

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Average % on Financial Aid

32%

29%

View 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 Grant

$11,588

$9,521

View 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

84%

83%

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Acceptance Rate Trends (2015-2025)
Year	Contra Costa County Average	California (CA) Average	National Average
2025	78%	80%	81%
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

$17.51 million

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Endowment Trends (2017-2025)
Year	Contra Costa County Average	California (CA) Average	National Average
2025	$37 M	$31 M	$39 M
2024	$7 M	$17 M	$39 M
2023	$7 M	$16 M	$39 M
2022	$7 M	$18 M	$40 M
2021	$7 M	$17 M	$40 M
2020	$7 M	$16 M	$40 M
2019	$4 M	$15 M	$40 M
2018	$4 M	$12 M	$43 M
2017	$4 M	$16 M	$45 M

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Students by Ethnicity:

0.73

0.74

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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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# American Indian Students

36 Students

3,574 Students

% American Indian Students

n/a

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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

71,778 Students

% Asian Students

11%

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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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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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# Black Students

1,253 Students

30,221 Students

% Black Students

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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

235,736 Students

% White Students

39%

37%

View 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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# Hawaiian Students

263 Students

5,499 Students

% Hawaiian Students

# Two or more races Students

n/a

% of Two or more races Students

n/a

# Others Students

5,864 Students

188,105 Students

% of Others Students

31%

29%

View 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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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 De La Salle High School, Prospect Sierra School, and The Athenian 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 $17,574.

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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