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SCHOOL COMMUNITY·BONNEVILLE JOINT DISTRICT·NCES 160093000909

RIMROCK ELEMENTARY

4855 BRENNAN BEND, AMMON, ID 83406 · (208) 525-4400 · Bonneville County
GRADES PK–06ELEMENTARY22-SUBURBREGULAR SCHOOL533 STUDENTS
A-
allk12 Grade
Scored higher than 75% of Idaho public elementary schools
  • A-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • ·Beats expectations Not available for this school, so the grade uses the other parts.
  • ·Three-year trend Not available for this school, so the grade uses the other parts.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Idaho public elementary schools

Enrollment
533
Elementary
DISTRICT 457 · STATE 332
Student : Teacher
22.9:1
23 FTE teachers
DISTRICT 20.8:1 · STATE 18.1:1
Free / Reduced Lunch
14%
73 students
DISTRICT 38% · STATE 46%
Community
5
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Kindergarten5410%
Grade 16713%
Grade 27113%
Grade 37514%
Grade 48115%
Grade 59317%
Grade 69217%

This year's kindergarten class (54) is 41% smaller than its 6th grade class (92).

Student demographics
16%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 34% · STATE 44% · US 70%
White
48992%
DISTRICT 80% · STATE 72% · US 43%
Hispanic
275%
DISTRICT 16% · STATE 21% · US 30%
Black
20%
DISTRICT 1% · STATE 1% · US 15%
Asian
20%
DISTRICT 1% · STATE 1% · US 6%
Two+
102%
DISTRICT 2% · STATE 3% · US 5%
Native American
31%
DISTRICT 1% · STATE 1% · US 1%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
27652%
Female
25748%

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Test scores

ISAT 2024-25 . % Proficient
English Language Arts
64.9%
ID avg 53.4%
Math
63.7%
ID avg 43.5%

What this means: On the ISAT, Idaho's statewide test, about 65 of every 100 students at this school read and write at grade level and about 64 of 100 do math at grade level. Across all Idaho schools, those numbers are about 53 and 44.

Source: ISAT. All students, all grades. See all years and grades →

Schools most like RIMROCK ELEMENTARY

SchoolStudentsLow-incomeProficient
RIMROCK ELEMENTARY this school53313.7%N/A
WOODLAND HILLS ELEMENTARY
AMMON
50715.0%N/A
SUNNYSIDE ELEMENTARY SCHOOL
IDAHO FALLS
56818.3%N/A
HAYDEN MEADOWS ELEMENTARY SCHOOL
HAYDEN LAKE
50222.1%N/A
DALTON ELEMENTARY SCHOOL
DALTON GARDENS
41121.7%N/A
CAMELOT ELEMENTARY SCHOOL
LEWISTON
31015.2%N/A
Matched among Idaho elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where RIMROCK ELEMENTARY ranks

Among elementary schools
MeasureThis schoolIn IdahoIn Bonneville County
Math proficiency
ranked highest first
63.7%#57 of 323#2 of 28
Reading proficiency
ranked highest first
64.9%#62 of 319#3 of 28
Enrollment
ranked largest first
533#48 of 393#8 of 29
Students per teacher
ranked fewest first
22.9:1#287 of 295#23 of 27
Diversity index
ranked most diverse first
15.6%#286 of 296#27 of 27
Free and reduced lunch
ranked highest share first
13.7%#319 of 328#27 of 27
Enrollment change since 2017-18
ranked fastest growth first
+14.6%#21 of 70#3 of 13
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
533
+45 (+9%) vs 2020
+41% since 2010-11, when it was 379
Student : Teacher
22.9:1
was 24.4:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2553323.322.9:114% (73)
2023-245332323.2:113% (68)
2022-2355124.122.8:113% (70)
2020-214882024.4:110% (50)
2017-1846520.822.4:113% (59)
2015-164231724.9:112% (51)
2010-113791821.1:118% (68)
Source: NCES Common Core of Data. Rows are the federal collections on file for RIMROCK ELEMENTARY.

Since 2017-18: students up 15% (465 to 533); teachers up 12% (20.8 to 23.3).

About RIMROCK ELEMENTARY

In AMMON, Idaho, RIMROCK ELEMENTARY is a high-enrollment elementary school. It enrolled 533 students in pre-K through 6 for the 2024-25 school year. Enrollment is 61% higher than the average for elementary schools in Idaho, which is about 332.

BONNEVILLE JOINT DISTRICT counts 13,577 students in its 26 schools, and RIMROCK ELEMENTARY is one of them.

White students are the large majority at RIMROCK ELEMENTARY, with 92% of enrollment. Other groups make up 5% Hispanic. RIMROCK ELEMENTARY has a diversity index of 16%, compared with 70% for all US public school students.

The school reported 23.3 full-time-equivalent teachers in 2024-25 and a ratio of 22.9:1. For comparison, elementary schools in Idaho average 18.1:1. Free or reduced-price lunch eligibility is 14%. It compares with 41% for public schools in Bonneville County.

Measured against Idaho public elementary schools, RIMROCK ELEMENTARY receives an A-. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.

Across Bonneville County, median household income is about $79,068, roughly 33% of adults have a four-year degree or more, and the share of residents below the poverty line is 7%. The public schools of Bonneville County number 57 and enroll about 27,028.

MOUNTAIN VALLEY ELEMENTARY SCHOOL is the nearest neighboring public school, about 0.8 miles away. A five-mile radius around the school includes at least 8 other public schools.

In the federal locale system, RIMROCK ELEMENTARY is coded Suburb: Mid-size, for schools in a suburban area outside a principal city, within an urbanized area with a population between 100,000 and 250,000.

Enrollment was 488 in 2020-21 and 533 in 2024-25, a rise of 45 students. In 2020-21, the student-to-teacher ratio was 24.4:1; by 2024-25 it was 22.9:1.

Threads on this page can be about school events, clubs, and volunteer needs. Anyone with firsthand experience at this school can post or comment.

Bonneville County at a glance

View full county profile
Population
129,523
Census ACS
Median income
$79,068
Household, ACS
Bachelor's+
33%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
57
27,028 students

Quick facts

School name
RIMROCK ELEMENTARY
District
BONNEVILLE JOINT DISTRICT
Address
4855 BRENNAN BEND, AMMON, ID 83406
Phone
(208) 525-4400
County
Bonneville County
Level
Elementary
Grade range
PK–06
Total enrollment
533
Teachers (FTE)
23
Student–teacher ratio
22.9:1
Free and reduced lunch
73 (14%)
Locale
22-Suburb: Mid-size
NCES ID
160093000909
Charter school
No
Virtual school
No

Related schools

Other schools in BONNEVILLE JOINT DISTRICT
Other schools in AMMON
Nearby schools

Frequently asked questions

About RIMROCK ELEMENTARY
How many students attend RIMROCK ELEMENTARY?
RIMROCK ELEMENTARY enrolls approximately 533 students in grades PK-06.
What age range does RIMROCK ELEMENTARY serve?
RIMROCK ELEMENTARY serves students from grade PK through grade 06.
How many teachers does RIMROCK ELEMENTARY have?
RIMROCK ELEMENTARY employs 23 FTE teachers, for a student-to-teacher ratio of 22.9:1.
How diverse is RIMROCK ELEMENTARY?
RIMROCK ELEMENTARY reports a student body of 92% White, 5% Hispanic, 0% Black, 0% Asian, 2% Two or more.
What district is RIMROCK ELEMENTARY in?
RIMROCK ELEMENTARY is part of BONNEVILLE JOINT DISTRICT.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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