St. Thomas School has daily religious instruction that permeates the learning experience.
Students form values necessary for responsible decision-making. St. Thomas School students experience success in state standardized achievement tests given every year.
We take pride in their many successes. St. Thomas School teachers view their work as both a career and a ministry.
The teacher's visible respect for each student, their confidence in your child's abilities, and their genuine concern consciously sets a standard for relationships among classmates.
Quick Facts (2025-26)
- Top Ranked SD School
- Grades: Prekindergarten-5
- Enrollment: 74 students
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
St. Thomas School ranks among the top 20% of private schools in South Dakota for:
Category
Attribute
School History
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Prekindergarten-5
Year Founded
1929
School Calendar
Student Body
Total Students
74 students
Student Body Type
Co-ed
% Students of Color
11%
State avg.: 21%
Students by Grade

Academics and Faculty
Total Classroom Teachers
5 teachers
Student-Teacher Ratio
15:1
National avg.: 13:1
Tuition and Acceptance Rate
School Notes
- St. Thomas School has daily religious instruction that permeates the learning experience. Students form values necessary for responsible decision-making. St. Thomas School students experience success in state standardized achievement tests given every year. We take pride in their many successes. St. Thomas School teachers view their work as both a career and a ministry. The teacher's visible respect for each student, their confidence in your child's abilities, and their genuine concern consciously sets a standard for relationships among classmates.
Source: Verified school update
Frequently Asked Questions
What is St. Thomas School's ranking?
St. Thomas School ranks among the top 20% of private schools in South Dakota for: Oldest founding date.
When is the application deadline for St. Thomas School?
The application deadline for St. Thomas School is rolling (applications are reviewed as they are received year-round).
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