Serving 110 students in grades 4-8, Three Rivers Charter School ranks in the top 5% of all schools in Oregon for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%).
The percentage of students achieving proficiency in math is 60-64% (which is higher than the Oregon state average of 31%). The percentage of students achieving proficiency in reading/language arts is 80-84% (which is higher than the Oregon state average of 44%).
The student-teacher ratio of 16:1 is lower than the Oregon state level of 17:1.
Minority enrollment is 43% of the student body (majority Asian), which is higher than the Oregon state average of 42% (majority Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: 4-8
- Enrollment: 110 students
- Student-Teacher Ratio: 16:1
- Minority Enrollment: 43%
- Overall Testing Rank: Top 5% in OR
- Math Proficiency: 60-64% (Top 5%)
- Reading Proficiency: 80-84% (Top 5%)
- Science Proficiency: 70-79% (Top 1%)
- Source: National Center for Education Statistics (NCES), OR Dept. of Education
Top Rankings
Three Rivers Charter School ranks among the top 20% of public schools in Oregon for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Three Rivers Charter School's student population of 110 students has stayed relatively flat over five school years.
The teacher population of 7 teachers has stayed relatively flat over five school years.
School Type
Grades Offered
Grades 4-8
(No virtual instruction)
(No virtual instruction)
Total Students
110 students
Gender %
Total Classroom Teachers
7 teachers
School Calendar
School Rankings
Three Rivers Charter School ranks within the top 5% of all 1,174 schools in Oregon (based off of combined math and reading proficiency testing data).
The diversity score of Three Rivers Charter School is 0.61, which is more than the diversity score at state average of 0.60. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#31 out of 1174 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
60-64%
31%
Reading/Language Arts Test Scores (% Proficient)
80-84%
44%
Science Test Scores (% Proficient)
70-79%
30%
Student-Teacher Ratio
16:1
17:1
American Indian
n/a
1%
Asian
17%
4%
Hispanic
7%
26%
Black
n/a
3%
White
57%
58%
Hawaiian
n/a
1%
Two or more races
19%
7%
All Ethnic Groups
Eligible for Free Lunch
3%
51%
Eligible for Reduced Lunch
5%
2%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), OR Dept. of Education
Frequently Asked Questions
What is Three Rivers Charter School's ranking?
Three Rivers Charter School is ranked #31 out of 1,174 schools, which ranks it among the top 5% of public schools in Oregon.
What percent of students have achieved state testing proficiency in math and reading?
60-64% of students have achieved math proficiency (compared to the 31% OR state average), while 80-84% of students have achieved reading proficiency (compared to the 44% OR state average).
How many students attend Three Rivers Charter School?
110 students attend Three Rivers Charter School.
What is the racial composition of the student body?
57% of Three Rivers Charter School students are White, 19% of students are Two or more races, 17% of students are Asian, and 7% of students are Hispanic.
What is the student-teacher ratio of Three Rivers Charter School?
Three Rivers Charter School has a student ration of 16:1, which is lower than the Oregon state average of 17:1.
What grades does Three Rivers Charter School offer ?
Three Rivers Charter School offers enrollment in grades 4-8 (No virtual instruction).
What school district is Three Rivers Charter School part of?
Three Rivers Charter School is part of West Linn-Wilsonville School District 3j.
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