Enrollment
305
Idaho · 2024-25 NCES data
Other / mixed grade configuration · Firth, ID
Federal NCES profile for Firth High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
The verdict
Firth High School earns 29/100 on the Resource Investment Index, with class sizes larger than 81% of Idaho schools.
Firth High School has class sizes larger than 81% of Idaho schools. Computed live against every Idaho school reporting to NCES.
By Resource Investment Index, Firth High School ranks #3 of 3 public schools in Firth, ID.
Enrollment
305
Idaho · 2024-25 NCES data
Teachers (FTE)
15.0
Federal CCD staff survey
Students per teacher
20.3:1
vs 17.1:1 Idaho avg
+19% vs state
Free-lunch eligible
20.6%
vs 29.3% Idaho avg
-30% vs state
How Firth High School compares with Idaho and U.S. medians
Larger classes than state median
20.3:1 - 3.2 above the Idaho state median of 17.1:1, indicating larger average class loads than typical schools in the state.
Firth High School is a mid-sized combined-grade school in Firth, Idaho, enrolling 305 students.
Class loads run somewhat heavier than typical: 20.3:1 puts it in the larger third of Idaho schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 20.6% of students eligible for free meals.
With 305 students, its enrollment sits close to the Idaho median campus size.
Its Resource Investment Index lands in the lower third of 775 scored Idaho schools.
Among 186 similarly sized, similarly resourced-need Idaho schools statewide, it ranks #159, in the lower tier once campus size and economic need are matched.
Its student body is predominantly White (84% of enrollment) (diversity index 28/100).
Counselor coverage runs a bit thin, about 305 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
The surrounding Firth District spends $7,956 per pupil, 33% below the Idaho average, a leaner-resourced district than most.
Firth District also operates A W Johnson Elementary School (256 students) and Firth Middle School (247 students) alongside Firth High 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
Firth High School on the metrics families compare, against Idaho and U.S. means.
| Metric | This school | vs Idaho | Idaho avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.3:1 | ▲ 19% | 17.1:1 | 15.7:1 |
| Free-lunch eligible | 20.6% | ▼ 30% | 29.3% | 51.7% |
| Enrollment | 305 | top 54% | - | - |
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 83.9% of enrollment.
Simpson diversity index - at 28.0, Firth High School is less mixed than the Idaho school average of 36.3.
District-wide per-pupil expenditure for Firth District, which includes Firth 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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| A W Johnson Elementary School | Similar size | Similar economic need | Lower S:T ratio |
| Firth Middle School | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Firth High School's own figures; each column derives from NCES Common Core of Data.
Matched by enrollment size and by staffing ratio across all of Idaho, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Firth 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.
Firth High School has 305 students enrolled. It is a public school in Firth, ID.
The student-teacher ratio at Firth High School is 20.3:1, which is 19% higher than the Idaho average of 17.1:1 and 29% higher than the national average of 15.7:1.
20.6% of students at Firth High School are eligible for free lunch, compared to the Idaho average of 29.3%.
The largest demographic group at Firth High School is White at 83.9% of enrollment, in Firth, ID.
Firth High School has a Resource Investment Index of 29/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, AP course offerings, counselor availability. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Firth High School ranks #3 of 3 public schools in Firth, ID. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Firth on the city page.
Firth High School earns 29/100 on the Resource Investment Index, with class sizes larger than 81% of Idaho 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 Firth High School, Firth District also operates A W Johnson Elementary School (256 students) and Firth Middle School (247 students). See the Firth District 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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Last updated:
PlainSchools, “Firth High School, Firth ID.” 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/firth-high-school-id
You are welcome to quote these figures with attribution to PlainSchools and the underlying source. The URL above is stable.