Enrollment
170
Montana · 2024-25 NCES data
Other / mixed grade configuration · Darby, MT
Federal NCES profile for Darby School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 27/100.
The verdict
Darby School earns 27/100 on the Resource Investment Index, with class sizes near the Montana median.
Darby School has class sizes near the Montana median. Computed live against every Montana school reporting to NCES.
By Resource Investment Index, Darby School ranks #3 of 3 public schools in Darby, MT.
NCES ID 300828000237 Verify on NCES CCD record →
Enrollment
170
Montana · 2024-25 NCES data
Teachers (FTE)
13.0
Federal CCD staff survey
Students per teacher
13.1:1
vs 11.8:1 Montana avg
+11% vs state
How Darby School compares with Montana and U.S. medians
Slightly above state median
13.1:1 - 1.3 above the Montana state median of 11.8:1, indicating larger average class loads than typical schools in the state.
Darby School is a mid-sized combined-grade school in Darby, Montana, enrolling 170 students.
At 13.1:1, its student-teacher ratio sits close to the Montana median, within a few percentage points of the 11.8:1 state norm, neither notably crowded nor notably small.
Enrollment of 170 puts it in the larger third of Montana schools by headcount.
Its Resource Investment Index trails 94% of the 826 Montana schools with a score on record, one of the lower results on this measure.
Its student body is predominantly White (88% of enrollment) (diversity index 22/100).
Counselor availability sits well past the ASCA benchmark, roughly 340 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 47.1% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Darby K-12 Schools spends $13,880 per pupil, 28% below the Montana average, a leaner-resourced district than most.
Its district draws 18.9% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Darby K-12 Schools also operates Darby High School (116 students) and Darby 7-8 (48 students) alongside Darby School.
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
Darby School on the metrics families compare, against Montana and U.S. means.
| Metric | This school | vs Montana | Montana avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.1:1 | ▲ 11% | 11.8:1 | 15.7:1 |
| Enrollment | 170 | top 35% | - | - |
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 88.2% of enrollment.
Simpson diversity index - at 21.8, Darby School is about as mixed as the Montana school average of 23.6.
District-wide per-pupil expenditure for Darby K-12 Schools, which includes Darby School.
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 |
|---|---|---|---|
| Darby High School | Smaller | No free-lunch data | Similar S:T ratio |
| Darby 7-8 | Smaller | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Darby School's own figures; each column derives from NCES Common Core of Data.
Matched by enrollment size and by staffing ratio across all of Montana, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Darby School'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.
Darby School has 170 students enrolled. It is a public school in Darby, MT.
The student-teacher ratio at Darby School is 13.1:1, which is 11% higher than the Montana average of 11.8:1 and 17% lower than the national average of 15.7:1.
The largest demographic group at Darby School is White at 88.2% of enrollment, in Darby, MT.
Darby School has a Resource Investment Index of 27/100 (lower 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, Darby School ranks #3 of 3 public schools in Darby, MT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Darby on the city page.
Darby School earns 27/100 on the Resource Investment Index, with class sizes near the Montana 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 Darby School, Darby K-12 Schools also operates Darby High School (116 students) and Darby 7-8 (48 students). See the Darby K-12 Schools 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, “Darby School, Darby MT.” 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/darby-school-mt
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