Enrollment
76
South Dakota · 2024-25 NCES data
Middle school (grades 6-8) · Castlewood, SD
Federal NCES profile for Castlewood Middle School - 03, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 53/100.
The verdict
Castlewood Middle School - 03 earns 53/100 on the Resource Investment Index, with class sizes larger than 93% of South Dakota schools.
Castlewood Middle School - 03 has class sizes larger than 93% of South Dakota schools. Computed live against every South Dakota school reporting to NCES.
By Resource Investment Index, Castlewood Middle School - 03 ranks #1 of 4 public schools in Castlewood, SD.
NCES ID 461128000954 Verify on NCES CCD record →
Enrollment
76
South Dakota · 2024-25 NCES data
Teachers (FTE)
4.0
Federal CCD staff survey
Students per teacher
19:1
vs 13.6:1 South Dakota avg
+40% vs state
Free-lunch eligible
9.3%
vs 28.8% South Dakota avg
-68% vs state
How Castlewood Middle School - 03 compares with South Dakota and U.S. medians
Larger classes than state median
19:1 - 5.4 above the South Dakota state median of 13.6:1, indicating larger average class loads than typical schools in the state.
Castlewood Middle School - 03 is a lower-poverty, mid-sized middle school in Castlewood, South Dakota, enrolling 76 students.
Class loads run heavy: 19:1 is larger than about 93% of South Dakota schools and 40% above the 13.6:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat below the state's typical profile, with 9.3% of students eligible for free meals.
With 76 students, its enrollment sits close to the South Dakota median campus size.
Its Resource Investment Index lands in the upper third of 691 scored South Dakota schools.
Against 128 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #52.
Its student body is predominantly White (91% of enrollment) (diversity index 17/100).
Counselor coverage is strong, about 76 students per counselor, inside the American School Counselor Association's recommended 250:1.
10.5% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Castlewood School District 28-1 spends $9,844 per pupil, 27% below the South Dakota average, a leaner-resourced district than most.
Its district draws 23.7% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Castlewood School District 28-1 also operates Castlewood Elementary - 02 (140 students) and Castlewood High School - 01 (112 students) alongside Castlewood Middle School - 03.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
Castlewood Middle School - 03 on the metrics families compare, against South Dakota and U.S. means.
| Metric | This school | vs South Dakota | South Dakota avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 19:1 | ▲ 40% | 13.6:1 | 15.7:1 |
| Free-lunch eligible | 9.3% | ▼ 68% | 28.8% | 51.7% |
| Enrollment | 76 | top 59% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Largest group: White at 90.8% of enrollment.
Simpson diversity index - at 17.1, Castlewood Middle School - 03 is less mixed than the South Dakota school average of 27.6.
District-wide per-pupil expenditure for Castlewood School District 28-1, which includes Castlewood Middle School - 03.
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Castlewood Elementary - 02 | Larger | Similar economic need | Lower S:T ratio |
| Castlewood High School - 01 | Larger | Similar economic need | Lower S:T ratio |
| Claremont Colony Elementary - 04 | Smaller | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Castlewood Middle School - 03's own figures; each column derives from NCES Common Core of Data.
Matched by enrollment size and by staffing ratio across all of South Dakota, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Castlewood Middle School - 03's federal record.
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Castlewood Middle School - 03 has 76 students enrolled. It is a middle school in Castlewood, SD.
The student-teacher ratio at Castlewood Middle School - 03 is 19:1, which is 40% higher than the South Dakota average of 13.6:1 and 21% higher than the national average of 15.7:1.
9.3% of students at Castlewood Middle School - 03 are eligible for free lunch, compared to the South Dakota average of 28.8%.
The largest demographic group at Castlewood Middle School - 03 is White at 90.8% of enrollment, in Castlewood, SD.
Castlewood Middle School - 03 has a Resource Investment Index of 53/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Castlewood Middle School - 03 ranks #1 of 4 public schools in Castlewood, SD. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Castlewood on the city page.
Castlewood Middle School - 03 earns 53/100 on the Resource Investment Index, with class sizes larger than 93% of South Dakota schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
Besides Castlewood Middle School - 03, Castlewood School District 28-1 also operates Castlewood Elementary - 02 (140 students), Castlewood High School - 01 (112 students), and Claremont Colony Elementary - 04 (17 students). See the Castlewood School District 28-1 district page for the complete list.
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.
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PlainSchools, “Castlewood Middle School - 03, Castlewood SD.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/castlewood-middle-school-03-sd
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