Private School Review - Established 2003

Best Mercer County Private Schools (2026)

For the 2026 school year, there is 1 private school serving 175 students in Mercer County, OH (there are 22 public schools, serving 8,323 public students). 2% of all K-12 students are educated in private schools (compared to the OH state average of 12%).
The average acceptance rate is 98%, which is higher than the Ohio private school average acceptance rate of 85%.
100% of private schools in Mercer County, OH are religiously affiliated (most commonly Catholic).

Quick Facts (2026)

Quick Facts (2026)

Top Ranked Mercer County Private Schools (2026)

Immaculate Conception School Photo
Immaculate Conception School
Gr: PK-6 | 175 students
Avg. class size: 15 students
Sports: 2 | Extracurriculars: 5
Catholic
200 W Wayne St
Celina, OH 45822
(419) 586-2379
View Profile

Overview

Category
This State (OH)
US
# Schools
1 School

Trends in Total Number of Private Schools

YearMercer County Total Schools
20251
20241
20231
20221
20211
20201
20191
20181
20171
20161
20151
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# Students
175 Students
231,311 Students

Trends in the Average Number of Students Per Private School

YearMercer County AverageOhio (OH) AverageNational Average
2025175195179
2024175183172
2023175189174
2022173228185
2021173218180
2020173183171
2019173188175
2018173186172
2017175228180
2016175225178
2015175208167
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% Average Students of Color
4%
25%

Percentage of Students of Color Trends (2015-2025)

YearMercer County AverageOhio (OH) AverageNational Average
20254%25%34%
20244%25%34%
20214%21%32%
20204%21%32%
20194%20%31%
20184%19%31%
20178%23%32%
20168%23%32%
20158%24%32%
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Academics and Faculty:

# Teachers
10 Teachers
19,088 Teachers
Average Student-Teacher Ratio
18:1
13:1

Student-Teacher Ratio Trends (2015-2025)

YearMercer County AverageOhio (OH) AverageNational Average
202518:113:111:1
202418:113:111:1
202318:113:111:1
202217:113:111:1
202117:113:111:1
202017:113:112:1
201917:114:112:1
201817:114:112:1
201719:114:112:1
201619:114:112:1
201519:114:112:1
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% Average Faculty w/Advanced Degree
50%
51%

Percentage of Faculty With Advanced Degrees Trends (2022-2025)

YearMercer County AverageOhio (OH) AverageNational Average
202550%51%55%
202450%50%54%
202350%49%54%
202275%50%54%
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Average Class Size
15 students
17 students

Class Size Trends (2022-2025)

YearMercer County AverageOhio (OH) AverageNational Average
2025151715
2024151715
2023151715
2022151715
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Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$5,000
$10,610

Tuition Cost Trends (2019-2025)

YearMercer County AverageOhio (OH) AverageNational Average
2025$5,000$10,808$15,012
2024$5,000$8,128$13,254
2023$5,000$7,826$12,626
2022$4,835$7,602$12,187
2021$4,835$7,328$11,800
2020$4,835$6,938$11,512
2019$4,835$6,866$11,293
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Average % on Financial Aid
80%
52%

Percent on Financial Aid Trends (2019-2025)

YearMercer County AverageOhio (OH) AverageNational Average
202580%51%34%
202480%48%34%
202380%46%34%
202280%43%33%
202183%42%33%
202083%41%32%
201983%39%31%
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Average Financial Aid Grant
$1,951
$5,013

Financial Aid Grant Trends (2019-2025)

YearMercer County AverageOhio (OH) AverageNational Average
2025$1,951$4,753$7,073
2024$1,951$4,764$6,930
2023$1,951$4,415$6,469
2022$1,951$3,892$6,289
2021$2,113$3,757$6,055
2020$2,113$3,590$5,921
2019$2,113$3,372$5,795
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Average Acceptance Rate
98%
85%

Acceptance Rate Trends (2022-2025)

YearMercer County AverageOhio (OH) AverageNational Average
202598%84%81%
202498%89%85%
202398%89%85%
202298%89%85%
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Average Endowment Size
$2 million
$70.7 million

Endowment Trends (2022-2025)

YearMercer County AverageOhio (OH) AverageNational Average
2025$2 M$68 M$60 M
2024$2 M$22 M$59 M
2023$2 M$24 M$71 M
2022$2 M$23 M$76 M
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Students by Ethnicity:

0.45
0.59

Diversity Score Trends

YearMercer County AverageOhio (OH) AverageNational Average
20250.450.580.65
20240.450.580.65
20230.450.560.65
20220.450.540.64
20210.450.540.64
20200.450.530.64
20190.450.510.63
20180.450.510.63
20170.510.480.61
20160.510.480.61
20150.510.470.61
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# American Indian Students
n/a
1,332 Students
% American Indian Students
n/a
1%
# Asian Students
1 Student
5,039 Students
% Asian Students
1%
2%

Asian Student Percentage Trends

YearMercer County AverageOhio (OH) AverageNational Average
20251%2%5%
20241%2%5%
20231%3%5%
20221%3%4%
20211%3%4%
20201%3%4%
20191%2%4%
20181%2%4%
20172%2%4%
20162%2%4%
20152%3%4%
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# Hispanic Students
1 Student
10,835 Students
% Hispanic Students
n/a
5%

Hispanic Student Percentage Trends

YearMercer County AverageOhio (OH) AverageNational Average
20251%5%9%
20241%5%9%
20231%4%9%
20221%3%8%
20211%3%9%
20201%3%9%
20191%3%8%
20181%3%8%
20171%2%8%
20161%2%8%
20151%2%8%
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# Black Students
3 Students
24,257 Students
% Black Students
2%
10%

Black Student Percentage Trends

YearMercer County AverageOhio (OH) AverageNational Average
20252%10%7%
20242%10%7%
20232%10%8%
20222%9%7%
20212%10%7%
20202%9%8%
20192%9%7%
20182%9%7%
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# White Students
120 Students
139,899 Students
% White Students
68%
59%

White Student Percentage Trends

YearMercer County AverageOhio (OH) AverageNational Average
202568%60%52%
202468%60%52%
202368%62%52%
202269%64%54%
202169%64%54%
202069%65%54%
201969%67%56%
201869%67%56%
201762%70%58%
201662%70%58%
201562%70%58%
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# Hawaiian Students
n/a
309 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
50 Students
54,126 Students
% of Others Students
29%
23%

Other Races Student Percentage Trends

YearMercer County AverageOhio (OH) AverageNational Average
202528%22%26%
202428%22%26%
202328%21%25%
202227%21%25%
202127%20%25%
202027%20%24%
201927%19%24%
201827%19%23%
201734%18%22%
201634%18%22%
201534%17%21%
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All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
5 extracurriculars
9 extracurriculars
Average Number of Sports
2 sports
7 sports

Frequently Asked Questions

What are the top ranked private schools in Mercer County, OH?
The top ranked private schools in Mercer County, OH is Immaculate Conception School.
How many private schools are located in Mercer County?
1 private schools are located in Mercer County.
What percentage of students in Mercer County go to private school?
2% of all K-12 students in Mercer County are educated in private schools (compared to the OH state average of 12%).
What percentage of private schools are religiously affiliated in Mercer County?
100% of private schools in Mercer County are religiously affiliated (most commonly Catholic).

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