St. Mary School (Top Ranked Private School for 2026)

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About the School

St. Mary School in Portage, WI offers co–ed Catholic education for grades PK through 8 in a town setting.
Eablished in 1866, the school has a total enrollment of 170 students with an average class size of 16.
The udent–teacher ratio of 12:1, supported by 14 faculty members.
Approximately 3.4% of the udent body represents students of color.
Mary School holds membership in the National Catholic Educational Association and regional independent school associations.

Quick Facts (2026)

Top Ranked WI School
Grades: Prekindergarten-8
Enrollment: 170 students
Average class size: 16 students
Application Deadline: None / Rolling
Source: ✓Verified school update

School Rankings

St. Mary School ranks among the top 20% of private schools in Wisconsin for:

School Facts

School Membership(s)School Assoc.

National Catholic Educational Association (NCEA)
State or regional independent school association

Religious Affiliation

Catholic

Grades Offered

Grades Prekindergarten-8

Students By Grade

View Data

Distribution of Students By Grade
Grade	St. Mary School
Pre-K	16
Kind	17
1	17
2	21
3	15
4	13
5	20
6	20
7	16
8	15

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Year Founded

1866

Student Body

Total Students

170 students

Student Body Type

Co-ed

% Students of Color

State avg.: 35%

Academics & Faculty

Total Classroom Teachers

14 teachers

Student-Teacher Ratio

12:1

National avg.: 11:1

Average Class Size

16 students

Classroom Dress Code

Casual

Tuition & Acceptance Rate

Admission Deadline

None / Rolling

Application URL

Online Application

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Frequently Asked Questions

What schools are St. Mary School often compared to?

St. Mary School is often viewed alongside schools like St. Johns Lutheran School by visitors of our site.

What is St. Mary School's ranking?

St. Mary School ranks among the top 20% of private schools in Wisconsin for: Oldest founding date.

When is the application deadline for St. Mary School?

The application deadline for St. Mary School is rolling (applications are reviewed as they are received year-round).

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Did You Know?

The average private school tuition in Columbia County, WI is $4,034 for elementary schools (read more about average private school tuition across the country).