Cornerstone School
Sioux Falls · SD · Religious-affiliated · K-12 combined
Similar nearby schools
Most similar nearby schools
Sioux Falls Christian Schools → Sioux Falls Lutheran School → Sioux Falls Lutheran School → O'Gorman High School → Choices Jr. High → Education & Integration Services → St Mary Grade School → St Mary Catholic School →Keep this page current
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How Cornerstone School compares for families
What families should know about Cornerstone School.
- ▸ LocallySD students outperform the US average on NAEP 8th-grade math (+7 points).
- ▸ vs Similar SchoolsThe closest comparables nearby: Sioux Falls Christian Schools, Sioux Falls Lutheran School, Sioux Falls Lutheran School and 5 more. See the sidebar to compare side-by-side.
For Parents
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Your state's public flagship
University of South Dakota
The in-state tuition gap is the flagship's biggest draw — most in-state families pay far less than the out-of-state sticker. Average net price after aid runs about $19,858/yr. Admission odds depend on your student's GPA and test scores, not which high school they attend.
Source: IPEDS admissions, tuition & enrollment + College Scorecard net price. Flagship = the state's primary public research university.
Enrollment trend & projection
Private school enrollment comes from the NCES Private School Universe Survey (PSS), which is collected every other year — not annually like public-school data. The most recent published collection is 2021–22; NCES targeted spring 2026 for the 2023–24 release — we'll load it as soon as it's published.
Most similar nearby high schools
The schools most like this one — same type, blended on distance and size — and where their enrollment is heading. These are the schools families here weigh against each other.
| School | Type | Miles | HS enrollment | Trend |
|---|---|---|---|---|
| Sioux Falls Christian Schools Sioux Falls |
Private | 2.1 | 1,295 | +21.8% |
| Sioux Falls Lutheran School Sioux Falls |
Private | 4.4 | 241 | +56.5% |
| Sioux Falls Lutheran School Sioux Falls |
Private | 4.4 | 233 | — |
| O'Gorman High School Sioux Falls |
Private | 2.4 | 2,200 | +186.5% |
| Choices Jr. High Sioux Falls |
Private | 3.4 | 7 | — |
| Education & Integration Services Sioux Falls |
Private | 5.5 | 27 | — |
| St Mary Grade School Dell Rapids |
Private | 21.6 | 233 | +11.5% |
| St Mary Catholic School Dell Rapids |
Private | 21.6 | 233 | — |
At a glance
JSON · Using this page with an AI assistantCornerstone School is a private high school in Sioux Falls, SD, enrolling 39 students in grades 9-12 in 2022.
Sources: National Center for Education Statistics (enrollment), the federal Civil Rights Data Collection and EDFacts, state education agencies where named, and the school's own published documents where named.
Questions families ask
How many students attend Cornerstone School? Cornerstone School is a private high school in Sioux Falls, SD, enrolling 39 students in grades 9-12 in 2022.
Analysis: Test Prep Gurus (High School Reach, highschoolreach.com). These figures may be quoted with attribution to Test Prep Gurus.
What does AI tell parents about Cornerstone School?
When a parent asks an AI assistant about Cornerstone School, the answer is built from a handful of sources, and Reach is often one of them. We will send the admissions office a short report on what AI says about Cornerstone School and where it comes from. The first report is free.
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Related reading
AP courses · October 2026
Test scores · October 2026