Enrollment
50
South Dakota · 2024-25 NCES data
Middle school (grades 6-8) · Armour, SD
Armour Middle School - 03
Federal NCES profile for Armour Middle School - 03, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 63/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 460378000878
👥 S:T ratio 60
🌟 Gifted program 30
🎓 Counselors 90
📋 Attendance 70
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Armour Middle School - 03 earns 63/100 on the Resource Investment Index, with class sizes smaller than 79% of South Dakota schools.
- #1 of 3
- public schools in Armour · Resource Index
- 63
- Resource Index · Higher
- 10:1
- small classes for South Dakota
- 22.4%
- free-lunch eligible
Armour Middle School - 03 has class sizes smaller than 79% of South Dakota schools. Computed live against every South Dakota school reporting to NCES.
By Resource Investment Index, Armour Middle School - 03 ranks #1 of 3 public schools in Armour, SD.
School address
District: Armour School District 21-1 · South Dakota
NCES ID 460378000878 Verify on NCES CCD record →
Teachers (FTE)
5.0
Federal CCD staff survey
Students per teacher
10:1
vs 13.6:1 South Dakota avg
-26% vs state
Free-lunch eligible
22.4%
vs 28.8% South Dakota avg
-22% vs state
Student-teacher ratio in context
How Armour Middle School - 03 compares with South Dakota and U.S. medians
What stands out at Armour Middle School - 03
Armour Middle School - 03 is a mid-sized middle school in Armour, South Dakota, enrolling 50 students.
Class sizes run a bit leaner than typical: 10:1 puts it in the smaller third of South Dakota schools by student-teacher ratio.
Its free-meal eligibility rate of 22.4% lands close to the South Dakota typical range, neither a high- nor low-need campus by this measure.
Enrollment of 50 puts it in the smaller third of South Dakota schools by headcount.
Its Resource Investment Index outscores 94% of the 691 South Dakota schools with a score on record, a top-tier result on this measure.
Among 83 similarly sized, similarly resourced-need South Dakota schools statewide, it ranks #3, a top-tier result once campus size and economic need are matched.
Its student body is predominantly White (80% of enrollment) (diversity index 35/100).
Counselor coverage is strong, about 50 students per counselor, inside the American School Counselor Association's recommended 250:1.
12.0% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Armour School District 21-1 also operates Armour Elementary - 02 (119 students) and Armour High School - 01 (57 students) alongside Armour 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
How Armour Middle School - 03 compares
Armour 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 | 10:1 | ▼ 26% | 13.6:1 | 15.7:1 |
| Free-lunch eligible | 22.4% | ▼ 22% | 28.8% | 51.7% |
| Enrollment | 50 | top 71% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10:1
Leaner classes than 89% of US schools, among the more generously staffed nationally.
50
Bigger than 5% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
22.4%
free-lunch eligible
- 22% below the South Dakota average of 28.8%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
10:1
students per teacher
- 26% below state mean
Top 21% in South Dakota - lower ratio than 79% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
12.0%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$13,344
per pupil, district-wide
- below South Dakota avg of $13,477
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 50 students, the combined health-and-guidance staffing load for this school.
Discipline context
3
in-school suspensions + 0 out-of-school
Suspension rate: 6.0 per 100 students. Combined in-school and out-of-school rate: 6.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
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.
Student demographics
White 80.0%
Hispanic or Latino 6.0%
American Indian / Alaska Native 6.0%
African American 4.0%
Two or More 4.0%
Largest group: White at 80.0% of enrollment.
Student-body diversity index 35.0/100
Simpson diversity index - at 35.0, Armour Middle School - 03 is more mixed than the South Dakota school average of 27.6.
Programs
Funding & spending
District-wide per-pupil expenditure for Armour School District 21-1, which includes Armour Middle School - 03.
$13,344
Per student
-1%
vs South Dakota
Avg $13,477
-20%
vs U.S.
Avg $16,593
Revenue mix
Local 54.5%
State 30.6%
Federal 14.8%
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.
How Armour Middle School - 03 Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Armour Elementary - 02 | Larger | Lower economic need | Higher S:T ratio |
| Armour High School - 01 | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Armour Middle School - 03's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 119
- Students per teacher
- 13.2:1
- Resource Index
- 56/100
- Enrollment
- 57
- Students per teacher
- 8.1:1
- Resource Index
- 62/100
Similar middle schools statewide
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.
Similar enrollment (~50 students)
Next steps
Verify locally before acting on Armour Middle School - 03's federal record.
- Compare Armour Middle School - 03 against another school. Compare schools
- Armour School District 21-1's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
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.
Frequently asked questions about Armour Middle School - 03
How many students attend Armour Middle School - 03?
Armour Middle School - 03 has 50 students enrolled. It is a middle school in Armour, SD.
What is the student-teacher ratio at Armour Middle School - 03?
The student-teacher ratio at Armour Middle School - 03 is 10:1, which is 26% lower than the South Dakota average of 13.6:1 and 36% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Armour Middle School - 03?
22.4% of students at Armour Middle School - 03 are eligible for free lunch, compared to the South Dakota average of 28.8%.
What is the racial and ethnic makeup of Armour Middle School - 03?
The largest demographic group at Armour Middle School - 03 is White at 80.0% of enrollment, in Armour, SD.
What is the Resource Investment Index for Armour Middle School - 03?
Armour Middle School - 03 has a Resource Investment Index of 63/100 (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).
How does Armour Middle School - 03 rank among public schools in Armour?
By Resource Investment Index, Armour Middle School - 03 ranks #1 of 3 public schools in Armour, 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 Armour on the city page.
Is Armour Middle School - 03 a good school?
Armour Middle School - 03 earns 63/100 on the Resource Investment Index, with class sizes smaller than 79% 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.
What other schools are in Armour School District 21-1?
Besides Armour Middle School - 03, Armour School District 21-1 also operates Armour Elementary - 02 (119 students) and Armour High School - 01 (57 students). See the Armour School District 21-1 district page for the complete list.
Related tools
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.