Enrollment
355
Montana · 2024-25 NCES data
High school (grades 9-12) · Sidney, MT
Federal NCES profile for Sidney High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
The verdict
Sidney High School earns 41/100 on the Resource Investment Index, with class sizes near the Montana median.
Sidney High School has class sizes near the Montana median. Computed live against every Montana school reporting to NCES.
By Resource Investment Index, Sidney High School ranks #2 of 6 public schools in Sidney, MT.
Enrollment
355
Montana · 2024-25 NCES data
Teachers (FTE)
27.0
Federal CCD staff survey
Students per teacher
13.1:1
vs 11.8:1 Montana avg
+11% vs state
How Sidney High School compares with Montana and U.S. medians
Sidney High School is a large high school in Sidney, Montana, enrolling 355 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 355 puts it in the larger third of Montana schools by headcount.
Its Resource Investment Index lands in the upper third of 826 scored Montana schools.
Its student body is predominantly White (83% of enrollment) (diversity index 30/100).
No Advanced Placement courses are reported for this campus in the federal data.
Counselor coverage is strong, about 178 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance runs somewhat below the norm, with 19.4% of students chronically absent per the 2021-22 civil-rights collection.
Sidney H S operates only this one school, so Sidney High School has no district-mates to compare against locally.
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 High 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 | 355 | top 15% | - | - |
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 83.4% of enrollment.
Simpson diversity index - at 29.5, Sidney High School is more mixed than the Montana school average of 23.6.
District-wide per-pupil expenditure for Sidney H S, which includes Sidney High 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.
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 High 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 High School has 355 students enrolled. It is a high school in Sidney, MT.
The student-teacher ratio at Sidney High 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 Sidney High School is White at 83.4% of enrollment, in Sidney, MT.
Sidney High School has a Resource Investment Index of 41/100 (typical reported resources relative to schools nationally) based on 5 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 High School ranks #2 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 High School earns 41/100 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.
None reported; Sidney H S operates only Sidney High School as a public school district in NCES's records.
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.