St. Mary Catholic Schools strive for a united community of academic excellence and stewardship by embracing the Gospel and carrying the light of Christ.
Therefore, St. Mary Catholic Schools will offer a broad curriculum to fit the needs and levels in the intellectual range of all students by providing academic, religious, and activity programs which give each individual the opportunity to develop his/her potential.
We believe this can be attained through the joint efforts of students, parents, staff, and community.
The following information has been written to acquaint you with facts about our school operations, policies, and procedures.
Quick Stats (2025)
- Top Ranked SD School
- Grades: Prekindergarten-12
- Enrollment: 252 students
- Average class size: 16 students
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
St. Mary Catholic School ranks among the top 20% of private schools in South Dakota for:
Category
Attribute
Student Body
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Prekindergarten-12
School Calendar
Student Body
Total Students
252 students
Student Body Type
Co-ed
% Students of Color
2%
State avg.: 21%
Students by Grade

Academics and Faculty
Total Classroom Teachers
13 teachers
Student : Teacher Ratio
19:1
National avg.: 13:1
Average Class Size
16 students
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Source: Verified school update
Frequently Asked Questions
What is St. Mary Catholic School's ranking?
St. Mary Catholic School ranks among the top 20% of private schools in South Dakota for: Largest student body.
When is the application deadline for St. Mary Catholic School?
The application deadline for St. Mary Catholic School is rolling (applications are reviewed as they are received year-round).
School Reviews
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