Enrollment
108
Oregon · 2024-25 NCES data
Elementary school (grades K-5) · West Linn, OR
Three Rivers Charter School
Federal NCES profile for Three Rivers Charter School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 65/100.
2024-25 NCES dataElementary school (grades K-5)NCES 411317001437Charter school
👥 S:T ratio 38
🌟 Gifted program 70
🎓 Counselors 78
📋 Attendance 75
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Three Rivers Charter School earns 65/100 on the Resource Investment Index, with class sizes near the Oregon median.
- #1 of 9
- public schools in West Linn · Resource Index
- 65
- Resource Index · Higher
- 15.4:1
- students per teacher
- 108
- students enrolled
Three Rivers Charter School has class sizes near the Oregon median. Computed live against every Oregon school reporting to NCES.
By Resource Investment Index, Three Rivers Charter School ranks #1 of 9 public schools in West Linn, OR.
School address
District: West Linn-Wilsonville Sd 3j · Oregon
NCES ID 411317001437 Verify on NCES CCD record →
Teachers (FTE)
7.0
Federal CCD staff survey
Students per teacher
15.4:1
vs 17.6:1 Oregon avg
-13% vs state
Student-teacher ratio in context
How Three Rivers Charter School compares with Oregon and U.S. medians
What stands out at Three Rivers Charter School
Three Rivers Charter School is a small charter elementary school in West Linn, Oregon, enrolling 108 students.
Class sizes run a bit leaner than typical: 15.4:1 puts it in the smaller third of Oregon schools by student-teacher ratio.
Enrollment of 108 puts it in the smaller third of Oregon schools by headcount.
Its Resource Investment Index outscores 98% of the 1,273 Oregon schools with a score on record, a top-tier result on this measure.
Its student body is led by White (60%) and Two or More (16%) (diversity index 59/100).
Counselor coverage is strong, about 108 students per counselor, inside the American School Counselor Association's recommended 250:1.
10.2% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding West Linn-Wilsonville Sd 3j spends $13,465 per pupil, 26% below the Oregon average, a leaner-resourced district than most.
West Linn-Wilsonville Sd 3j also operates West Linn High School (1,809 students) and Wilsonville High School (1,258 students) alongside Three Rivers Charter 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
How Three Rivers Charter School compares
Three Rivers Charter School on the metrics families compare, against Oregon and U.S. means.
| Metric | This school | vs Oregon | Oregon avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.4:1 | ▼ 13% | 17.6:1 | 15.7:1 |
| Enrollment | 108 | top 89% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.4:1
Leaner classes than 43% of US schools, a middle-of-the-pack class size.
108
Bigger than 11% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Staffing depth
15.4:1
students per teacher
- 13% below state mean
Top 31% in Oregon - lower ratio than 69% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
10.2%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$13,465
per pupil, district-wide
- below Oregon avg of $18,086
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 108 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
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
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.
Student demographics
White 60.2%
Two or More 15.7%
Asian 13.0%
Hispanic or Latino 10.2%
African American 0.9%
Largest group: White at 60.2% of enrollment.
Student-body diversity index 58.6/100
Simpson diversity index - at 58.6, Three Rivers Charter School is more mixed than the Oregon school average of 47.1.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for West Linn-Wilsonville Sd 3j, which includes Three Rivers Charter School.
$13,465
Per student
-26%
vs Oregon
Avg $18,086
-19%
vs U.S.
Avg $16,593
Revenue mix
Local 50.1%
State 46.8%
Federal 3.1%
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.
How Three Rivers Charter School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| West Linn High School | Larger | No free-lunch data | Higher S:T ratio |
| Wilsonville High School | Larger | No free-lunch data | Higher S:T ratio |
| Rosemont Ridge Middle School | Larger | No free-lunch data | Higher S:T ratio |
| Boeckman Creek Primary School | Larger | No free-lunch data | Similar S:T ratio |
| Lowrie Primary School | Larger | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Three Rivers Charter School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,809
- Students per teacher
- 22.1:1
- Resource Index
- 27/100
- Enrollment
- 1,258
- Students per teacher
- 19.7:1
- Resource Index
- 32/100
- Enrollment
- 699
- Students per teacher
- 19.4:1
- Resource Index
- 38/100
- Enrollment
- 488
- Students per teacher
- 16.8:1
- Resource Index
- 26/100
- Enrollment
- 482
- Students per teacher
- 19.3:1
- Resource Index
- 32/100
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Oregon, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~108 students)
Next steps
Verify locally before acting on Three Rivers Charter School's federal record.
- Compare Three Rivers Charter School against another school. Compare schools
- West Linn-Wilsonville Sd 3j's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
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.
Frequently asked questions about Three Rivers Charter School
How many students attend Three Rivers Charter School?
Three Rivers Charter School has 108 students enrolled. It is an elementary school in West Linn, OR.
What is the student-teacher ratio at Three Rivers Charter School?
The student-teacher ratio at Three Rivers Charter School is 15.4:1, which is 13% lower than the Oregon average of 17.6:1 and 2% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Three Rivers Charter School?
The largest demographic group at Three Rivers Charter School is White at 60.2% of enrollment, in West Linn, OR. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 58.6/100.
What is the Resource Investment Index for Three Rivers Charter School?
Three Rivers Charter School has a Resource Investment Index of 65/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Three Rivers Charter School rank among public schools in West Linn?
By Resource Investment Index, Three Rivers Charter School ranks #1 of 9 public schools in West Linn, OR. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in West Linn on the city page.
Is Three Rivers Charter School a good school?
Three Rivers Charter School earns 65/100 on the Resource Investment Index, with class sizes near the Oregon 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.
What other schools are in West Linn-Wilsonville Sd 3j?
Besides Three Rivers Charter School, West Linn-Wilsonville Sd 3j also operates West Linn High School (1,809 students), Wilsonville High School (1,258 students), and Rosemont Ridge Middle School (699 students). See the West Linn-Wilsonville Sd 3j district page for the complete list.
Related tools
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.