Ontario, CA Private School Trends (10-Year)

Private Schools

-15.4% (-2 schools) 10-yr

2,313

Students

+24.0% (+448 students) 10-yr

$7,500

Avg. Tuition

Avg. Class Size

48%

Students of Color

-29.4% (-20.0 pp) 10-yr

14:1

Student-Teacher Ratio

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Enrollment & Diversity

Trends in Total Number of Private Schools

Year	Ontario, CA Total Schools
2025	11
2024	11
2023	11
2022	9
2021	9
2020	10
2019	10
2018	10
2017	11
2016	12
2015	13

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Private schools down 1 in Ontario, CA, from 12 in 2016 to 11 in 2025 after dipping to 9 in 2021-2022.

# Students

2,313 Students

659,577 Students

View Data

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

Trends in the Average Number of Students Per Private School

Year	Ontario, CA Avg	California (CA)	National
2025	229	180	179
2024	221	175	172
2023	256	181	174
2022	297	189	185
2021	297	185	180
2020	266	179	171
2019	266	179	175
2018	266	173	172
2017	262	179	180
2016	249	173	178
2015	170	162	167

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Average students down 68 in Ontario private schools, from 297 in 2021 to 229 in 2025.

% Students of Color

48%

52%

View Data

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

Percentage of Students of Color Trends (2015-2025)

Year	Ontario, CA Avg	California (CA)	National
2025	48%	51%	34%
2024	48%	51%	34%
2023	53%	50%	33%
2022	50%	48%	33%
2021	50%	48%	32%
2020	51%	48%	32%
2019	46%	48%	31%
2018	46%	47%	31%
2017	50%	50%	32%
2016	51%	49%	32%
2015	68%	49%	32%

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0.73

0.74

View Data

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

Diversity Score Trends

Year	Ontario, CA Avg	California (CA)	National
2025	0.73	0.74	0.65
2024	0.73	0.74	0.65
2023	0.73	0.74	0.65
2022	0.69	0.73	0.64
2021	0.69	0.73	0.64
2020	0.69	0.73	0.64
2019	0.69	0.73	0.63
2018	0.69	0.73	0.63
2017	0.69	0.72	0.61
2016	0.70	0.72	0.61
2015	0.73	0.72	0.61

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Show more data/charts: racial breakdown

# American Indian Students

15 Students

3,574 Students

% American Indian Students

View Data

Percentage of Private School Students of American Indian Trends

Year	Ontario, CA Avg	California (CA)	National
2025	1%	1%	1%
2024	1%	1%	1%
2023	1%	1%	1%

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# Asian Students

220 Students

71,777 Students

% Asian Students

11%

View Data

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

Asian Student Percentage Trends

Year	Ontario, CA Avg	California (CA)	National
2025	11%	11%	5%
2024	11%	11%	5%
2023	9%	11%	5%
2022	5%	10%	4%
2021	5%	10%	4%
2020	5%	10%	4%
2019	5%	10%	4%
2018	5%	10%	4%
2017	4%	10%	4%
2016	4%	10%	4%
2015	6%	10%	4%

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# Hispanic Students

500 Students

104,405 Students

% Hispanic Students

24%

16%

View Data

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

Hispanic Student Percentage Trends

Year	Ontario, CA Avg	California (CA)	National
2025	24%	16%	9%
2024	24%	16%	9%
2023	28%	16%	9%
2022	30%	16%	8%
2021	30%	16%	9%
2020	30%	16%	9%
2019	31%	16%	8%
2018	31%	17%	8%
2017	29%	17%	8%
2016	29%	17%	8%
2015	36%	17%	8%

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# Black Students

88 Students

30,221 Students

% Black Students

View Data

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

Black Student Percentage Trends

Year	Ontario, CA Avg	California (CA)	National
2025	4%	5%	7%
2024	4%	5%	7%
2023	6%	5%	8%
2022	7%	4%	7%
2021	7%	5%	7%
2020	7%	5%	8%
2019	7%	4%	7%
2018	7%	4%	7%
2017	7%	5%	7%
2016	9%	5%	7%
2015	10%	5%	8%

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# White Students

873 Students

235,730 Students

% White Students

42%

37%

View Data

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

White Student Percentage Trends

Year	Ontario, CA Avg	California (CA)	National
2025	42%	37%	52%
2024	42%	37%	52%
2023	40%	38%	52%
2022	45%	40%	54%
2021	45%	40%	54%
2020	45%	40%	54%
2019	45%	41%	56%
2018	45%	41%	56%
2017	45%	43%	58%
2016	44%	43%	58%
2015	34%	43%	58%

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# Hawaiian Students

6 Students

5,499 Students

% Hawaiian Students

<1%

# Others Students

375 Students

188,723 Students

% of Others Students

18%

29%

View Data

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

Other Races Student Percentage Trends

Year	Ontario, CA Avg	California (CA)	National
2025	18%	29%	26%
2024	18%	29%	26%
2023	15%	28%	25%
2022	12%	28%	25%
2021	12%	27%	25%
2020	12%	27%	24%
2019	11%	26%	24%
2018	11%	26%	23%
2017	15%	24%	22%
2016	14%	24%	22%
2015	14%	23%	21%

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All Ethnic Groups

Academics

# Teachers

162 Teachers

55,835 Teachers

Average Student-Teacher Ratio

14:1

12:1

View Data

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

Student-Teacher Ratio Trends (2015-2025)

Year	Ontario, CA Avg	California (CA)	National
2025	14:1	12:1	11:1
2024	14:1	12:1	11:1
2023	12:1	12:1	11:1
2022	16:1	12:1	11:1
2021	16:1	13:1	11:1
2020	16:1	13:1	12:1
2019	16:1	12:1	12:1
2018	16:1	12:1	12:1
2017	12:1	13:1	12:1
2016	13:1	13:1	12:1
2015	14:1	13:1	12:1

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% Average Faculty w/Advanced Degree

67%

60%

Average Class Size

17 students

Average Number of AP Courses

33 courses

15 courses

Average SAT score

1352

(Out of 1600)

1267

Tuition & Aid

Average Yearly Tuition Cost

$7,500

$17,602

Average Summer Program Cost

$250

$1,072

Average % on Financial Aid

23%

29%

Average Financial Aid Grant

$2,500

$9,656

Admissions & Athletics

Average Acceptance Rate

92%

83%

Average Number of Extracurriculars

6 extracurriculars

9 extracurriculars

Average Number of Sports

8 sports

7 sports

Frequently Asked Questions

What are the top ranked private schools in Ontario, CA?

The private schools in Ontario, CA include St. George Parish School, Ontario Christian School, and Orion International Academy.

How many private schools are located in Ontario?

11 private schools are located in Ontario.

How diverse are private schools in Ontario?

Ontario private schools are approximately 48% minority students, which is lower than the California private school average of 52%.

What percentage of students in Ontario go to private school?

8% of all K-12 students in Ontario are educated in private schools (compared to the CA state average of 10%).

What percentage of private schools are religiously affiliated in Ontario?

45% of private schools in Ontario are religiously affiliated (most commonly Christian and Baptist).

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