Enrollment
533
Idaho · 2024-25 NCES data
2024-25 NCES data Other / mixed grade configuration NCES 160093000909
Rimrock Elementary — Ammon, ID
Federal NCES profile for Rimrock Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 26/100.
👥 Class size 8
🌟 Gifted program 70
🎓 Counselors 0
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Bonneville Joint District · Idaho
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
24.0
Federal CCD staff survey
Students per teacher
23:1
vs 17.3:1 Idaho avg
+33% vs state
Free-lunch eligible
9.1%
vs 29.3% Idaho avg
-69% vs state
Student-teacher ratio in context
How Rimrock Elementary compares with Idaho and U.S. medians
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Rimrock Elementary reports 533 enrolled students to the National Center for Education Statistics (NCES) alongside 24.0 full-time-equivalent teachers, producing a 23:1 student-teacher ratio. That figure sits 33% above the Idaho state mean of 17.3:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 45% higher, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 9.1% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 69% below the Idaho average and 82% below the national baseline. Counselor coverage works out to roughly 533 students per counselor, above the ASCA-recommended ceiling of 250:1.
On the finance side, the surrounding Bonneville Joint District spends $8,773 per pupil district-wide, below the Idaho average of $12,943 and below the national average of $19,490. Revenue comes 19.2% from local sources (property taxes), 64.4% from the state, and 16.4% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 26/100 (F), calculated from 3 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Rimrock Elementary compares
Cross-validating school-level NCES values against Idaho state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Idaho | Idaho avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 23:1 | ▲ 33% | 17.3:1 | 15.9:1 |
| Free-lunch eligible | 9.1% | ▼ 69% | 29.3% | 51.8% |
| Enrollment | 533 | top 79% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Economic need
9.1%
free-lunch eligible
— 69% below the Idaho average of 29.3%
Below the 40% Title I threshold — federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
23:1
students per teacher
— 33% above state mean
Top 94% in Idaho — lower ratio than 6% of state schools
Above 20:1 — larger class loads than the typical U.S. public school; staffing is stretched relative to enrollment.
Funding equity
$8,773
per pupil, district-wide
— below Idaho avg of $12,943
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 533 students — the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 533 Top 79% in Idaho — larger than 21% of 778 state schools
Teachers (FTE) 24.0
Students per teacher 23:1 +33% vs state
Free-lunch eligible 9.1% -69% vs state
NCES ID 160093000909
Student demographics
White 91.7%
Hispanic or Latino 5.1%
Two or More 1.9%
American Indian / Alaska Native 0.6%
African American 0.4%
Asian 0.4%
Largest group: White at 91.7% of enrollment.
Programs & staff
Gifted & talented Yes
Counselors (FTE) 1.0
Students per counselor 533:1
Discipline & special education
In-school suspensions 0
Out-of-school suspensions 0
Funding & spending
District-wide per-pupil expenditure for Bonneville Joint District, which includes Rimrock Elementary.
$8,773
Per student
-32%
vs Idaho
Avg $12,943
-55%
vs U.S.
Avg $19,490
Revenue mix
Local 19.2%
State 64.4%
Federal 16.4%
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.
Other Schools in This District
- Enrollment
- 1,693
- Students per teacher
- 22.5:1
- Enrollment
- 1,230
- Students per teacher
- 23.2:1
- Enrollment
- 1,176
- Students per teacher
- 22.1:1
- Enrollment
- 810
- Students per teacher
- 21.5:1
- Enrollment
- 661
- Students per teacher
- 23.7:1
Similar other schools in Ammon
6 comparable other schools (grades Mixed) serving the same city.
White Pine Charter School
Standard public school
651 students 19.3:1 students per teacher
Woodland Hills Elementary
Standard public school
507 students 21.3:1 students per teacher
Hillview Elementary School
Standard public school
417 students 18.6:1 students per teacher
Mountain Valley Elementary School
Standard public school
398 students 17.9:1 students per teacher
Ammon Elementary School
Standard public school
303 students 19.3:1 students per teacher
Monticello Montessori Charter School
Standard public school
185 students 19:1 students per teacher
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Rimrock Elementary
How many students attend Rimrock Elementary?
Rimrock Elementary has 533 students enrolled. It is a other school in AMMON, ID.
What is the student-teacher ratio at Rimrock Elementary?
The student-teacher ratio at Rimrock Elementary is 23:1, which is 33% higher than the Idaho average of 17.3:1 and 45% higher than the national average of 15.9:1.
What percentage of students receive free lunch at Rimrock Elementary?
9.1% of students at Rimrock Elementary are eligible for free lunch, compared to the Idaho average of 29.3%.
What is the racial and ethnic makeup of Rimrock Elementary?
The largest demographic group at Rimrock Elementary is White at 91.7%. The school serves a diverse student body in AMMON, ID.
What is the Resource Investment Index for Rimrock Elementary?
Rimrock Elementary has a Resource Investment Index of 26/100 (F) based on 3 factors: student-teacher ratio, counselor availability. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.