Home > Iowa > Buena Vista County > Storm Lake

St. Mary's School

312 Seneca St
Storm Lake, IA 50588

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Tel: (502) 452-1712

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St. Mary's High School is a private, Roman Catholic high school in Storm Lake, Iowa.

It is located in the Roman Catholic Diocese of Sioux City.

Quick Stats (2025)

Grades: Prekindergarten-12
Enrollment: 310 students
Application Deadline: None / Rolling
Source: National Center for Education Statistics (NCES)

Top Rankings

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

School Overview

Religious Affiliation

Catholic

Grades Offered

Grades Prekindergarten-12

Year Founded

1912

Colors

White, Black

School Calendar

View School Calendar

Student Body

Total Students

310 students

Student Body Type

Co-ed

% Students of Color

39%

State avg.: 16%

Students by Grade

Academics and Faculty

Total Classroom Teachers

31 teachers

Student : Teacher Ratio

10:1

National avg.: 13:1

Tuition and Acceptance Rate

Admission Deadline

None / Rolling

Application URL

Online Application

Source: National Center for Education Statistics (NCES)

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Frequently Asked Questions

When is the application deadline for St. Mary's School?

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

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Quick Stats (2025)

Grades: Prekindergarten-12
Enrollment: 310 students
Application Deadline: None / Rolling
Source: National Center for Education Statistics (NCES)

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Did You Know?

The average private school tuition in Iowa is $9,506 for elementary schools and $11,180 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Iowa is 85% (read more about average acceptance rates across the country).