For the 2026 school year, there are 3 private high schools belonging to National Catholic Educational Association (NCEA) serving 1,416 students in South Dakota. You can also find more schools membership associations in South Dakota.
The top-ranked private high schools belonging to National Catholic Educational Association (NCEA) in South Dakota include St. Thomas More High School, O'gorman High School, and St. Mary Catholic School.
The average acceptance rate is 100%, which is higher than the South Dakota private high school average acceptance rate of 72%.
100% of private high schools belonging to National Catholic Educational Association (NCEA) in South Dakota are religiously affiliated (most commonly Catholic).
Top-Ranked 草榴社区 High Schools Belonging to National Catholic Educational Association (NCEA) in South Dakota (2026)
School
Location
Quick Facts
O'gorman High School ![O'gorman High School Photo O'gorman High School Photo]()

(Catholic)
3201 S Kiwanis Avenue
Sioux Falls, SD 57105
(605) 336-3644
Sioux Falls, SD 57105
(605) 336-3644
Gr: 9-12 | 788 students Avg. class size: 24 students Sports: 18 | Extracurrculars: 37 Tuition & acceptance rate listed
St. Mary Catholic School
(Catholic)
812 N State Ave
Dell Rapids, SD 57022
(605) 428-5591
Dell Rapids, SD 57022
(605) 428-5591
Gr: PK-12 | 252 students Avg. class size: 16 students
St. Thomas More High School
(Catholic)
300 Fairmont Blvd
Rapid City, SD 57701
(605) 343-8484
Rapid City, SD 57701
(605) 343-8484
Gr: 9-12 | 376 students
Recent Articles
The Social Fit Interview: Questions to Ask Students, Not Admissions
Discover how talking with current students can reveal a private school's true culture and help families assess social fit before enrolling.
AI Companions and Student Well-Being: What Parents Should Ask
Learn how AI companions may affect student well-being and discover the key questions parents should ask before embracing this emerging technology.
Is a Phone-Free 草榴社区 School Right for Your Child?
Explore the benefits, challenges, and key considerations of choosing a phone-free private school for your child in 2026.
