O Fallon, MO Private School Trends (10-Year)

Private Schools

+44.4% (+4 schools) 10-yr

4,589

Students

+96.2% (+2,250 students) 10-yr

$7,369

Avg. Tuition

Avg. Class Size

Students of Color

+40.0% (+2.0 pp) 10-yr

16:1

Student-Teacher Ratio

+14.3% (+2.0) 10-yr

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Enrollment & Diversity

Trends in Total Number of Private Schools

Year	O Fallon, MO Total Schools
2025	13
2024	14
2023	12
2022	12
2021	12
2020	12
2019	12
2018	12
2017	12
2015	9

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Private schools up 4 in O Fallon, rising from 9 in 2015 to 13 in 2025.

# Students

4,589 Students

119,656 Students

View Data

Trends in the Average Number of Students Per Private School

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	382	194	179
2024	381	190	172
2023	344	185	174
2022	334	196	185
2021	326	192	180
2020	360	183	171
2019	393	184	175
2018	424	183	172
2017	420	190	180
2015	292	180	167

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Average size up 90 students in O Fallon private schools, rising from 292 in 2015 to 382 in 2025.

% Students of Color

21%

View Data

Percentage of Students of Color Trends (2015-2025)

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	7%	20%	34%
2024	7%	21%	34%
2023	9%	20%	33%
2022	8%	18%	33%
2021	6%	18%	32%
2020	4%	19%	32%
2019	6%	18%	31%
2018	3%	18%	31%
2017	20%	21%	32%
2015	5%	20%	32%

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0.47

0.55

View Data

Diversity Score Trends

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	0.46	0.55	0.65
2024	0.46	0.56	0.65
2023	0.46	0.54	0.65
2022	0.39	0.52	0.64
2021	0.32	0.52	0.64
2020	0.33	0.52	0.64
2019	0.40	0.50	0.63
2018	0.40	0.50	0.63
2017	0.42	0.46	0.61
2015	0.51	0.45	0.61

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Diversity score up 14 points in O Fallon private schools, rising from 0.32 in 2021 to 0.46 in 2025.

Show more data/charts: racial breakdown

# American Indian Students

29 Students

283 Students

% American Indian Students

<1%

# Asian Students

45 Students

3,147 Students

% Asian Students

View Data

Asian Student Percentage Trends

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	1%	4%	5%
2024	1%	4%	5%
2023	2%	3%	5%
2022	1%	4%	4%
2021	1%	3%	4%
2020	1%	3%	4%
2019	1%	3%	4%
2018	1%	3%	4%

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Asian enrollment steady at 1% in O Fallon private schools, while Missouri was 4% and the U.S. 5% in 2025.

# Hispanic Students

73 Students

5,325 Students

% Hispanic Students

View Data

Hispanic Student Percentage Trends

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	2%	5%	9%
2024	2%	4%	9%
2023	1%	3%	9%
2022	1%	3%	8%
2021	1%	3%	9%
2020	1%	3%	9%
2019	1%	3%	8%
2018	1%	3%	8%
2017	2%	2%	8%
2015	2%	2%	8%

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Hispanic share still 2% in O Fallon private schools in 2025, below Missouri's 5% and the U.S. 9%.

# Black Students

53 Students

7,603 Students

% Black Students

View Data

Black Student Percentage Trends

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	1%	6%	7%
2024	1%	7%	7%
2023	1%	7%	8%
2022	1%	6%	7%
2021	1%	7%	7%
2020	1%	7%	8%
2019	1%	7%	7%
2018	1%	7%	7%
2017	1%	7%	7%
2015	1%	7%	8%

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# White Students

2,846 Students

73,073 Students

% White Students

68%

62%

View Data

White Student Percentage Trends

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	69%	62%	52%
2024	69%	62%	52%
2023	69%	64%	52%
2022	75%	66%	54%
2021	81%	66%	54%
2020	80%	66%	54%
2019	74%	68%	56%
2018	74%	68%	56%
2017	71%	71%	58%
2015	59%	72%	58%

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# Hawaiian Students

10 Students

218 Students

% Hawaiian Students

<1%

# Others Students

1,102 Students

27,593 Students

% of Others Students

27%

24%

View Data

Other Races Student Percentage Trends

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	26%	23%	26%
2024	26%	23%	26%
2023	27%	23%	25%
2022	22%	21%	25%
2021	16%	21%	25%
2020	17%	21%	24%
2019	23%	19%	24%
2018	23%	19%	23%
2017	26%	18%	22%
2015	38%	16%	21%

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All Ethnic Groups

Academics

# Teachers

285 Teachers

9,942 Teachers

Average Student-Teacher Ratio

16:1

12:1

View Data

Student-Teacher Ratio Trends (2015-2025)

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	18:1	12:1	11:1
2024	18:1	12:1	11:1
2023	15:1	13:1	11:1
2022	14:1	13:1	11:1
2021	15:1	13:1	11:1
2020	16:1	13:1	12:1
2019	14:1	12:1	12:1
2018	14:1	13:1	12:1
2017	15:1	12:1	12:1
2015	14:1	12:1	12:1

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Student-teacher ratio up 4 in O Fallon private schools, from 14:1 in 2019 to 18:1 in 2025, while Missouri stayed at 12:1 and the U.S. at 11:1.

% Average Faculty w/Advanced Degree

63%

56%

View Data

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

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	63%	56%	55%
2024	63%	55%	54%
2023	69%	55%	54%
2022	63%	55%	54%
2021	66%	55%	54%
2019	66%	54%	53%
2018	66%	53%	53%
2017	66%	53%	53%
2015	66%	50%	52%

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Average Class Size

17 students

16 students

View Data

Class Size Trends (2017-2025)

Year	O Fallon, MO Avg	Missouri (MO)	National
2025	17	16	15
2024	17	15	15
2023	17	15	15
2022	16	15	15
2021	17	15	15
2020	17	15	15
2019	18	15	15
2018	17	15	15
2017	17	15	15

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Class size rose 1 in O Fallon private schools, from 16 in 2022 to 17 in 2025, while Missouri stayed at 15.

Average Number of AP Courses

8 courses

15 courses

Average ACT score

(Out of 36)

Tuition & Aid

Average Yearly Tuition Cost

$7,369

$11,372

Average % on Financial Aid

28%

36%

Average Financial Aid Grant

$1,115

$5,733

Admissions & Athletics

Average Acceptance Rate

97%

87%

Average Number of Extracurriculars

9 extracurriculars

10 extracurriculars

Average Number of Sports

9 sports

7 sports

Frequently Asked Questions

What are the top ranked private schools in O Fallon, MO?

The private schools in O Fallon, MO include First Baptist Christian Academy, Christian School District, and Assumption School.

How many private schools are located in O Fallon?

13 private schools are located in O Fallon.

How diverse are private schools in O Fallon?

O Fallon private schools are approximately 7% minority students, which is lower than the Missouri private school average of 21%.

What percentage of students in O Fallon go to private school?

25% of all K-12 students in O Fallon are educated in private schools (compared to the MO state average of 12%).

What percentage of private schools are religiously affiliated in O Fallon?

69% of private schools in O Fallon are religiously affiliated (most commonly Catholic and Christian).

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