- Enrollment
- 1,355
- Students per teacher
- 58.9:1
- Resource Index
- 30/100
Elementary school (grades K-5) · Estacada, OR
River Mill Elementary School
Federal NCES profile for River Mill Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 21/100.
2024-25 NCES dataElementary school (grades K-5)NCES 410470000140
👥 S:T ratio 8
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 5
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
River Mill Elementary School earns 21/100 on the Resource Investment Index, with class sizes larger than 91% of Oregon schools.
- #3 of 4
- public schools in Estacada · Resource Index
- 21
- Resource Index · Lower
- 23:1
- large classes for Oregon
- 40.7%
- free-lunch eligible
River Mill Elementary School has class sizes larger than 91% of Oregon schools. Computed live against every Oregon school reporting to NCES.
By Resource Investment Index, River Mill Elementary School ranks #3 of 4 public schools in Estacada, OR.
School address
District: Estacada Sd 108 · Oregon
NCES ID 410470000140 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+13 students YoY
River Mill Elementary School held near 505 students from 2022-23 to 2023-24 (+13 headcount).
Teacher FTE added 22.5 → 27.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+13 students YoY 410470000140 · Estacada, OR Elementary · MID · TRAD
506 enr · 23:1 · 40.7% lunch · RII 21
Nearest enrollment peer: Summit Learning Charter (1,355 students)
River Mill Elementary School held near 505 students from 2022-23 to 2023-24 (+13 headcount). Teacher FTE added 22.5 → 27.0 across the same CCD years. Read with this school → · District book → · Oregon schools → · Find another →
River Mill Elementary School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Summit Learnin
Summit Learning Charter
1,355 students
- Estacada High
Estacada High School
558 students
- This school 506
River Mill Elementary School
506 students
- Estacada Middl 460
Estacada Middle School
460 students
- Clackamas Rive 433
Clackamas River Elementary School
433 students
What this shows River Mill Elementary School reports 506 students on the CCD universe file.
How River Mill Elementary School compares
River Mill Elementary School held steady on CCD headcount: ratios and free-lunch share vs Oregon and U.S. means.
| Metric | This school | vs Oregon | Oregon avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 23:1 | ▲ 31% | 17.6:1 | 15.7:1 |
| Free-lunch eligible | 40.7% | ▼ 23% | 52.8% | 51.7% |
| Enrollment | 506 | top 22% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
23:1
Leaner classes than 8% of US schools, heavier class loads than most.
506
Bigger than 62% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
40.7%
free-lunch eligible
- 23% below the Oregon average of 52.8%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
23:1
students per teacher
- 31% above state mean
Top 91% in Oregon - lower ratio than 9% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
37.9%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$10,420
per pupil, district-wide
- below Oregon avg of $21,075
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 506 students, the combined health-and-guidance staffing load for this school.
Discipline context
6
in-school suspensions + 10 out-of-school
Suspension rate: 1.2 per 100 students. Combined in-school and out-of-school rate: 3.2 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 73.7%
Hispanic or Latino 18.2%
Two or More 7.1%
African American 0.8%
American Indian / Alaska Native 0.2%
Largest group: White at 73.7% of enrollment.
Student-body diversity index 41.9/100
Simpson diversity index - at 41.9, River Mill Elementary School is less mixed than the Oregon school average of 47.1.
Programs
Gifted & talented Yes
District finance for Estacada Sd 108 reports $10,420 per pupil (NCES F-33) - open the district page for the full revenue mix.
How River Mill Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Summit Learning Charter | Larger | No free-lunch data | Higher S:T ratio |
| Estacada High School | Similar size | Similar economic need | Similar S:T ratio |
| Estacada Middle School | Similar size | Similar economic need | Higher S:T ratio |
| Clackamas River Elementary School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to River Mill Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 558
- Students per teacher
- 22.3:1
- Resource Index
- 31/100
- Enrollment
- 460
- Students per teacher
- 27.1:1
- Resource Index
- 28/100
- Enrollment
- 433
- Students per teacher
- 21.6:1
- Resource Index
- 17/100
Similar elementary schools in Estacada
1 comparable elementary schools (grades K-5) serving the same city.
Nationwide elementary schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~506 students)
Frequently asked questions about River Mill Elementary School
How many students attend River Mill Elementary School?
River Mill Elementary School has 506 students enrolled. It is an elementary school in Estacada, OR. CCD year-over-year: 492 (2022-23) → 505 (2023-24), nearly flat (+13).
What is the student-teacher ratio at River Mill Elementary School?
The student-teacher ratio at River Mill Elementary School is 23:1, which is 31% higher than the Oregon average of 17.6:1 and 46% higher than the national average of 15.7:1.
What percentage of students receive free lunch at River Mill Elementary School?
40.7% of students at River Mill Elementary School are eligible for free lunch, compared to the Oregon average of 52.8%.
What is the racial and ethnic makeup of River Mill Elementary School?
The largest demographic group at River Mill Elementary School is White at 73.7% of enrollment, in Estacada, OR.
What is the Resource Investment Index for River Mill Elementary School?
River Mill Elementary School has a Resource Investment Index of 21/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does River Mill Elementary School rank among public schools in Estacada?
By Resource Investment Index, River Mill Elementary School ranks #3 of 4 public schools in Estacada, OR. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.
What other schools are in Estacada Sd 108?
Besides River Mill Elementary School, Estacada Sd 108 also operates Summit Learning Charter (1,355 students), Estacada High School (558 students), and Estacada Middle School (460 students). See the Estacada Sd 108 district page for the complete list.