Enrollment
676
Missouri · 2024-25 NCES data
Middle school (grades 6-8) · St Charles, MO
Federal NCES profile for Hardin Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 49/100.
The verdict
Hardin Middle earns 49/100 on the Resource Investment Index, with class sizes near the Missouri median.
Hardin Middle has class sizes near the Missouri median. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Hardin Middle ranks #7 of 7 middle schools in St Charles, MO.
NCES ID 292892001850 Verify on NCES CCD record →
Enrollment
676
Missouri · 2024-25 NCES data
Teachers (FTE)
58.0
Federal CCD staff survey
Students per teacher
11.7:1
vs 12.8:1 Missouri avg
-9% vs state
Free-lunch eligible
34.9%
vs 46.1% Missouri avg
-24% vs state
How Hardin Middle compares with Missouri and U.S. medians
At or below state median
11.7:1 - 1.1 below the Missouri state median of 12.8:1, indicating smaller average class loads than typical schools in the state.
Hardin Middle is a large middle school in St Charles, Missouri, enrolling 676 students.
Class sizes run a bit leaner than typical: 11.7:1 puts it in the smaller third of Missouri schools by student-teacher ratio.
Its free-meal eligibility rate of 34.9% lands close to the Missouri typical range, neither a high- nor low-need campus by this measure.
Enrollment of 676 puts it in the larger third of Missouri schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 2,313 scored Missouri schools.
Against 335 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #117.
Its student body is led by White (70%) and African American (15%) (diversity index 47/100).
Counselor availability sits well past the ASCA benchmark, roughly 338 students sharing each counselor, though short of the most stretched campuses.
Attendance runs somewhat below the norm, with 24.6% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding St. Charles R-Vi spends $17,118 per pupil, 32% above the Missouri average, a better-resourced district than most.
Discipline events run high: 282 in- and out-of-school suspensions were reported for 676 students in the 2021-22 Civil Rights Data Collection.
St. Charles R-Vi also operates St. Charles High (782 students) and Jefferson Intermediate School (706 students) alongside Hardin Middle.
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
Hardin Middle on the metrics families compare, against Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 11.7:1 | ▼ 9% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 34.9% | ▼ 24% | 46.1% | 51.7% |
| Enrollment | 676 | top 11% | - | - |
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 70.0% of enrollment.
Simpson diversity index - at 47.3, Hardin Middle is more mixed than the Missouri school average of 31.0.
District-wide per-pupil expenditure for St. Charles R-Vi, which includes Hardin Middle.
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 |
|---|---|---|---|
| St. Charles High | Similar size | Similar economic need | Similar S:T ratio |
| Jefferson Intermediate School | Similar size | Similar economic need | Similar S:T ratio |
| St. Charles West High | Similar size | Similar economic need | Similar S:T ratio |
| Harris Elem. | Smaller | Similar economic need | Lower S:T ratio |
| Monroe Elem. | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Hardin Middle's own figures; each column derives from NCES Common Core of Data.
Matched by enrollment size and by staffing ratio across all of Missouri, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Hardin Middle'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.
Hardin Middle has 676 students enrolled. It is a middle school in St Charles, MO.
The student-teacher ratio at Hardin Middle is 11.7:1, which is 9% lower than the Missouri average of 12.8:1 and 25% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
34.9% of students at Hardin Middle are eligible for free lunch, compared to the Missouri average of 46.1%.
The largest demographic group at Hardin Middle is White at 70.0% of enrollment, in St Charles, MO.
Hardin Middle has a Resource Investment Index of 49/100 (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, Hardin Middle ranks #7 of 7 middle schools in St Charles, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in St Charles on the city page.
Hardin Middle earns 49/100 on the Resource Investment Index, with class sizes near the Missouri median. 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 Hardin Middle, St. Charles R-Vi also operates St. Charles High (782 students), Jefferson Intermediate School (706 students), and St. Charles West High (645 students). See the St. Charles R-Vi 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, “Hardin Middle, St Charles MO.” 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/hardin-middle-mo
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