For the 2026 school year, there are 2 private schools serving 657 students in Seneca County, OH (there are 25 public schools, serving 8,739 public students). 7% of all K-12 students in Seneca County, OH are educated in private schools (compared to the OH state average of 12%).
The top-ranked private schools in Seneca County, OH include Calvert Catholic School and Calvert Catholic Schools.
100% of private schools in Seneca County, OH are religiously affiliated (most commonly Catholic).
Top-Ranked Seneca County Private Schools (2026)
School
Location
Quick Facts
Calvert Catholic School
(Catholic)
152 Madison St
Tiffin, OH 44883
(419) 447-3844
Tiffin, OH 44883
(419) 447-3844
Gr: K-12 | 357 students Tuition listed
Calvert Catholic Schools
(Catholic)
357 S Washington St
Tiffin, OH 44883
(419) 447-5790
Tiffin, OH 44883
(419) 447-5790
Gr: PK-6 | 300 students
Seneca County Private Schools (Closed)
School
Location
Quick Facts
St. Mary School (Closed 2023)
(Catholic)
75 S Sandusky St
Tiffin, OH 44883
(419) 447-5202
Tiffin, OH 44883
(419) 447-5202
Gr: K-4 | 311 students
St. Wendelin High School (Closed 2023)
(Catholic)
533 N Countyline Street
Fostoria, OH 44830
(419) 435-8144
Fostoria, OH 44830
(419) 435-8144
Gr: 9-12 | 167 students
Overview
This County (Seneca County)
This State (OH)
# Schools
2 Schools
Student Body:
# Students
657 Students
229,070 Students
% Average Students of Color
4%
25%
Academics and Faculty:
# Teachers
55 Teachers
18,989 Teachers
Average Student-Teacher Ratio
12:1
13:1
Tuition and Acceptance Rate:
Average Yearly Tuition Cost
$45,000
$10,626
Students by Ethnicity:
Diversity Score
0.21
0.58
# American Indian Students
n/a
1,332 Students
% American Indian Students
n/a
1%
# Asian Students
15 Students
5,040 Students
% Asian Students
2%
2%
# Hispanic Students
4 Students
10,837 Students
% Hispanic Students
1%
5%
# Black Students
10 Students
24,287 Students
% Black Students
1%
10%
# White Students
637 Students
139,932 Students
% White Students
88%
60%
# 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
54 Students
51,916 Students
% of Others Students
8%
22%
All Ethnic Groups
Extracurriculars and Sports:
Frequently Asked Questions
What are the top-ranked private schools in Seneca County, OH?
The top-ranked private schools in Seneca County, OH include Calvert Catholic School and Calvert Catholic Schools.
How many private schools are located in Seneca County?
2 private schools are located in Seneca County.
What percentage of students in Seneca County go to private school?
7% of all K-12 students in Seneca County are educated in private schools (compared to the OH state average of 12%).
What percentage of private schools are religiously affiliated in Seneca County?
100% of private schools in Seneca County are religiously affiliated (most commonly Catholic).
Recent Articles
How to Stress-Test a Private School Budget Before Enrolling
Learn how to stress-test a private school budget before enrolling and avoid financial surprises that can affect your family's long-term plans.
When “Affordable Private School” Means Fewer Services
Learn what families may sacrifice when choosing an affordable private school and how to evaluate whether lower tuition still delivers long-term value.
Voucher Eligibility Fine Print Parents Miss
Learn the hidden voucher eligibility rules that can affect school choice decisions and how parents can avoid common application mistakes.