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St. Thomas More High School

300 Fairmont Blvd
Rapid City, SD 57701

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Tel: (605) 343-8484

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Rapid City Catholic School System is comprised of three schools: St. Elizabeth Ann Seton Three-year-old through Fifth Grade Elementary, St. Thomas More Sixth through Eighth Grade Middle School and St. Thomas More Ninth through Twelveth Grade High School. The entire system is accredited through NCEA.

We are a diverse and accessible community dedicated to assisting families in the formation of their children and serving as an education center for the community and diocese.

Anchored in the Catholic-school tradition and fired by the spirit of St. Elizabeth Ann Seton and St. Thomas More, we celebrate God's presence in the young, encouraging and empowering them to nourish and use their gifts to serve God through others.

We seek the development of individuals to their full potential in Christ through our spiritual formation, excellence-based academic curriculum and co-curricular programs and activities.

Quick Facts (2026)

Top-Ranked SD School
Grades: 9-12
Enrollment: 376 students
Application Deadline: None / Rolling
Source: Verified school update

Top Rankings

St. Thomas More High School ranks among the top 20% of private schools in South Dakota for:

School Overview

School Membership(s)School Assoc.

National Catholic Educational Association (NCEA)

Religious Affiliation

Catholic

Grades Offered

Grades 9-12

ADD/ADHD Support

Yes

Year Founded

1960

Colors

White, Royal blue

Student Body

Total Students

376 students

Student Body Type

Co-ed

% Students of Color

13%

State avg.: 21%

Students by Grade

Academics and Faculty

Total Classroom Teachers

16 teachers

Student-Teacher Ratio

24:1

National avg.: 11:1

Number of AP/Advanced Courses

7 courses

List of Courses Offered

Link to List of Courses

Matriculation DataMatric. Data

View Matriculation Data

Tuition and Acceptance Rate

Admission Deadline

None / Rolling

School Notes

School Motto: Developing Personal and Academic Excellence in the Catholic Tradition

Rapid City Catholic School System is comprised of three schools: St. Elizabeth Ann Seton Three-year-old throughFifthGrade Elementary, St. Thomas More Sixth through EighthGrade Middle School and St. Thomas More Ninth through Twelveth Grade High School. The entire system is accredited through NCEA. We are a diverse and accessible community dedicated to assisting families in the formation of their children and serving as an education center for the community and diocese.Anchored in the Catholic-school tradition and fired by the spirit of St. Elizabeth Ann Seton and St. Thomas More, we celebrate God's presence in the young, encouraging and empowering them to nourish and use their gifts to serve God through others.We seek the development of individuals to their full potential in Christ through our spiritual formation, excellence-based academic curriculum and co-curricular programs and activities.

Sample of notable school alumni/alumnae:
- Mara Wilkening, performed with the 8-10 SSAA National Honor Choir at Meyerson Symphony Hall in Dallas, Texas, March 22

Source: Verified school update

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Frequently Asked Questions

What schools are St. Thomas More High School often compared to?

St. Thomas More High School is often viewed alongside schools like Rapid City Christian School by visitors of our site.

Who are famous alumni from St. Thomas More High School?

St. Thomas More High School famous alumni include: Mara Wilkening, performed with the 8-10 SSAA National Honor Choir at Meyerson Symphony Hall in Dallas, Texas, March 22.

What is St. Thomas More High School's ranking?

St. Thomas More High School ranks among the top 20% of private schools in South Dakota for: Largest student body.

When is the application deadline for St. Thomas More High School?

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

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Quick Facts (2026)

Top-Ranked SD School
Grades: 9-12
Enrollment: 376 students
Application Deadline: None / Rolling
Source: Verified school update

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Did You Know?

The average private school tuition in South Dakota is $6,455 for elementary schools and $7,985 for high schools (read more about average private school tuition across the country).

The average acceptance rate in South Dakota is 76% (read more about average acceptance rates across the country).