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St. Mary School

315 West Cook Street Portage, WI 53901

Quick Facts (2026-27)

  • Top Ranked WI School
  • Grades: Prekindergarten-8
  • Enrollment: 170 students
  • Average class size: 16 students
  • Application Deadline: None / Rolling
  • Source: ✓Verified school update
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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 (2026-27)

  • 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:

Category
Attribute
School History

School Facts

Religious Affiliation
Grades Offered
Grades Prekindergarten-8
Students By Grade
Year Founded
1866

Student Body

Total Students
170 students
Student Body Type
Co-ed
% Students of Color
3%
State avg.: 35%

Academic Profile

Total Classroom Teachers
14 teachers
Student-Teacher Ratio
12:1
National avg.:
Average Class Size
16 students
Classroom Dress Code
Casual

Tuition & Financial Aid

Admission Deadline
None / Rolling
Application URL

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).

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