Enrollment
108
Middle
DISTRICT 417 · STATE 494
SCHOOL COMMUNITY·WEST LINN-WILSONVILLE SD 3J·NCES 411317001437
Three Rivers Charter School
2565 SW Ek Rd, West Linn, OR 97068 · (503) 673-7850 · Clackamas County
GRADES 04–08MIDDLE21-SUBURBCHARTERREGULAR SCHOOL108 STUDENTS
A+
allk12 Grade
Scored higher than 96% of Oregon public middle schools
- ATest 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 Oregon public middle schools
Student : Teacher
20.6:1
5 FTE teachers
DISTRICT 16.7:1 · STATE 19.3:1
Free / Reduced Lunch
,
Title I proxy
DISTRICT 35% · STATE 76%
Community
0
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 4 | 23 | 21% |
| Grade 5 | 23 | 21% |
| Grade 6 | 21 | 19% |
| Grade 7 | 20 | 19% |
| Grade 8 | 21 | 19% |
Student demographics
59%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 50% · STATE 59% · US 70%
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
Test scores
OSAS 2024-25 . % ProficientEnglish Language Arts
58.1%
OR avg 43.0% . -8.6pp since 2023
Math
58.1%
OR avg 31.8% . -6.4pp since 2023
What this means: On the OSAS, Oregon's statewide test, about 58 of every 100 students at this school read and write at grade level and about 58 of 100 do math at grade level. Across all Oregon schools, those numbers are about 43 and 32. Reading and writing scores are down about 9 points since 2023, while math scores are down about 6 points.
OSAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 58.1% | 58.1% |
| 2023-24 | 66.7% | 64.5% |
% Proficient, all students and all tested grades.
Source: OSAS. All students, all grades. See all years and grades →
Where Three Rivers Charter School ranks
Among middle schools| Measure | This school | In Oregon | In Clackamas County |
|---|---|---|---|
| Math proficiency ranked highest first | 58.1% | #10 of 200 ▼ 8 | #3 of 20 ▼ 2 |
| Reading proficiency ranked highest first | 58.1% | #26 of 201 ▼ 16 | #5 of 20 ▼ 1 |
| Enrollment ranked largest first | 108 | #202 of 208 | #20 of 21 |
Ranked against other public middle 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 2024-25Enrollment
108
-3 (-3%) vs 2020
+6% since 2010-11, when it was 102
Student : Teacher
20.6:1
was 15.9:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 108 | 5.3 | 20.6:1 | N/A |
| 2023-24 | 110 | 7.3 | 15.2:1 | N/A |
| 2022-23 | 109 | 7 | 15.6:1 | N/A |
| 2020-21 | 111 | 7 | 15.9:1 | N/A |
| 2017-18 | 111 | 6 | 18.5:1 | N/A |
| 2015-16 | 112 | 6 | 18.7:1 | N/A |
| 2010-11 | 102 | 5 | 20.4:1 | 0% (0) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Three Rivers Charter School.
Since 2017-18: students down 3% (111 to 108); teachers down 12% (6 to 5.3).
About Three Rivers Charter School
At 2565 SW Ek Rd in West Linn, Oregon, Three Rivers Charter School operates as a small middle school. It serves 108 students in grades 4 through 8. The average among middle schools in Oregon is roughly 494 students; this school is 78% smaller than that.
Three Rivers Charter School is among 17 schools run by West Linn-Wilsonville SD 3J, which serves 8,842 students.
At 60%, White students outnumber all other groups at Three Rivers Charter School combined. Other students are 16% multiracial, 13% Asian, and 10% Hispanic. By comparison, Clackamas County residents are about 79% White. The chance that two students picked at random at Three Rivers Charter School belong to different racial or ethnic groups, known as the diversity index, is 59%.
Three Rivers Charter School counts 5.3 full-time-equivalent teachers, about 20.6 students for each one. Among middle schools in Oregon, the typical ratio is 19.3:1.
allk12 grades Three Rivers Charter School an A+. The grade compares the school only with Oregon public middle schools, because each state gives its own test.
Federal survey data for Clackamas County show that median household income is about $103,517, roughly 41% of adults have a four-year degree or more, and the share of residents below the poverty line is 5%. Three Rivers Charter School is among the 118 public schools in Clackamas County.
The nearest other public school, Stafford Primary School, is about 0.7 miles away. In all, at least 8 other public schools sit within five miles of Three Rivers Charter School.
Three Rivers Charter School is coded as Suburb: Large in federal locale data. The school is classified as a charter school in federal data.
Enrollment was 111 in 2020-21 and 108 in 2024-25, a decrease of 3 students. The student-to-teacher ratio rose from 15.9:1 in 2020-21 to 20.6:1 in 2024-25.
Families, students, and staff can use this page to discuss science fairs, picture day, and bus routes at Three Rivers Charter School. Alumni can share how the school prepared them.
Clackamas County at a glance
View full county profilePopulation
423,975
Census ACS
Median income
$103,517
Household, ACS
Bachelor's+
41%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
118
57,601 students
Quick facts
Related schools
Other schools in West Linn-Wilsonville SD 3J
- West Linn High SchoolHigh · 1,809 students
- Wilsonville High SchoolHigh · 1,258 students
- Rosemont Ridge Middle SchoolMiddle · 699 students
- Boeckman Creek Primary SchoolElementary · 488 students
- Lowrie Primary SchoolElementary · 482 students
- Trillium Creek Primary SchoolElementary · 480 students
Other schools in West Linn
- West Linn High SchoolHigh · 1,809 students
- Rosemont Ridge Middle SchoolMiddle · 699 students
- Trillium Creek Primary SchoolElementary · 480 students
- Athey Creek Middle SchoolMiddle · 470 students
- Willamette Primary SchoolElementary · 384 students
- Sunset Primary SchoolElementary · 375 students
Other Three Rivers Charter schools
One other US public school is named Three Rivers Charter. Three Rivers Charter School is the largest of the 2.
- Three Rivers CharterFort Bragg, CA · 81 students
Nearby schools
- Stafford Primary School0.7 mi · 323
- Riverside High School0.8 mi · 160
- Bridgeport Elementary School1.6 mi · 531
- Athey Creek Middle School1.9 mi · 470
- Westridge Elementary School2.0 mi · 389
- Lakeridge High School2.1 mi · 1,241
Frequently asked questions
About Three Rivers Charter SchoolWhat is the total enrollment at Three Rivers Charter School?
Three Rivers Charter School enrolls approximately 108 students in grades 04-08.
Is Three Rivers Charter School an elementary, middle, or high school?
Three Rivers Charter School is a middle school covering grades 04-08.
How many students per teacher at Three Rivers Charter School?
Approximately 20.6:1 students per teacher at Three Rivers Charter School.
What is the student diversity at Three Rivers Charter School?
Student demographics at Three Rivers Charter School are roughly 60% White, 10% Hispanic, 1% Black, 13% Asian, 16% Two or more.
What district is Three Rivers Charter School in?
Three Rivers Charter School is part of West Linn-Wilsonville SD 3J.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.