Enrollment
319
Montana · 2024-25 NCES data
Middle school (grades 6-8) · Sidney, MT
Federal NCES profile for Sidney Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 39/100.
The verdict
Sidney Middle School earns 39/100 on the Resource Investment Index, with class sizes larger than 83% of Montana schools.
Sidney Middle School has class sizes larger than 83% of Montana schools. Computed live against every Montana school reporting to NCES.
By Resource Investment Index, Sidney Middle School ranks #4 of 6 public schools in Sidney, MT.
Enrollment
319
Montana · 2024-25 NCES data
Teachers (FTE)
20.0
Federal CCD staff survey
Students per teacher
15.9:1
vs 11.8:1 Montana avg
+35% vs state
How Sidney Middle School compares with Montana and U.S. medians
Larger classes than state median
15.9:1 - 4.1 above the Montana state median of 11.8:1, indicating larger average class loads than typical schools in the state.
Sidney Middle School is a mid-sized middle school in Sidney, Montana, enrolling 319 students.
Class loads run somewhat heavier than typical: 15.9:1 puts it in the larger third of Montana schools by student-teacher ratio.
Enrollment of 319 puts it in the larger third of Montana schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 826 scored Montana schools.
Its student body is led by White (80%) and Hispanic or Latino (12%) (diversity index 35/100).
Counselor coverage runs a bit thin, about 319 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance runs somewhat below the norm, with 19.4% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding Sidney Elem spends $11,705 per pupil, 39% below the Montana average, a leaner-resourced district than most.
Its district draws 16.8% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Sidney Elem also operates West Side Elementary (288 students) and Central Elementary (272 students) alongside Sidney Middle 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
Sidney Middle 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 | 15.9:1 | ▲ 35% | 11.8:1 | 15.7:1 |
| Enrollment | 319 | top 18% | - | - |
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 79.9% of enrollment.
Simpson diversity index - at 34.5, Sidney Middle School is more mixed than the Montana school average of 23.6.
District-wide per-pupil expenditure for Sidney Elem, which includes Sidney Middle 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 |
|---|---|---|---|
| West Side Elementary | Similar size | No free-lunch data | Lower S:T ratio |
| Central Elementary | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Sidney Middle 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 Sidney Middle 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.
Sidney Middle School has 319 students enrolled. It is a middle school in Sidney, MT.
The student-teacher ratio at Sidney Middle School is 15.9:1, which is 35% higher than the Montana average of 11.8:1 and 1% higher than the national average of 15.7:1.
The largest demographic group at Sidney Middle School is White at 79.9% of enrollment, in Sidney, MT.
Sidney Middle School has a Resource Investment Index of 39/100 (typical 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, Sidney Middle School ranks #4 of 6 public schools in Sidney, 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 Sidney on the city page.
Sidney Middle School earns 39/100 on the Resource Investment Index, with class sizes larger than 83% of Montana 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 Sidney Middle School, Sidney Elem also operates West Side Elementary (288 students) and Central Elementary (272 students). See the Sidney Elem 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, “Sidney Middle School, Sidney 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/sidney-middle-school-mt
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