Tumwater Middle School

Middle school·Grades 6-8 Portland, Oregon·97229
Score
94.8/100
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#11
Among 202 Oregon middle schools
#2
In Beaverton SD 48J
#8
In Portland
Top 6%
In Oregon

Score 94.8/100: better than 94% of Oregon middle schools on 2025-26 state tests. Schools are only compared with others of the same type in the same state. How we score schools

Performance (state tests, 2025-26)

% proficient on state tests in Oregon, all students. Colored bars are green when the school is at or above the average for similar Oregon schools.

English language arts
64%
Similar Oregon schools ≈ 43%, better than 90% of them
935 students tested
Math
59%
Similar Oregon schools ≈ 31%, better than 95% of them
935 students tested
Science
58%
Similar Oregon schools ≈ 27%, better than 97% of them
301 students tested
All Oregon schools (ELA / math)
44% / 32%
State average across every school type, 2025-26
All 10 published results by grade and test

As published by Oregon Department of Education. "Hidden" means the state didn't publish the result to protect student privacy.

SubjectGradeTestResultStudents tested
English language artsGrade 6OSAS57307
English language artsGrade 7OSAS68.3333
English language artsGrade 8OSAS67.3295
English language artsAll gradesOSAS64.3935
MathGrade 6OSAS52.9308
MathGrade 7OSAS59.8331
MathGrade 8OSAS64.8293
MathAll gradesOSAS59.1935
ScienceGrade 8OSAS58301
ScienceAll gradesOSAS58301

School profile

Grades
6-8
Students
976
Type
Middle school
Charter school
No
Program
Regular

Students

Enrollment
976
Typical middle school: 491
Free or reduced-price lunch
52%
Typical middle school: 71%

District and location

School district
City
Washington County

Contact

Address
650 NW 118th Ave
Portland, OR 97229

"Typical" is the middle (median) middle school in Oregon. Higher or lower is not in itself better or worse. Address, phone and website are as the state reported them to the U.S. Department of Education for 2024-25, so check with the school before visiting. School details: U.S. Department of Education, Common Core of Data (enrollment 2023-24, lunch eligibility 2024-25).

Nearby middle schools

Straight-line distance. Check the district's attendance zones: living close to a school doesn't guarantee a place.

Location

OpenStreetMap · Google Maps

Tumwater Middle School at a glance

Tumwater Middle School is a public middle school in Portland, Oregon, serving grades 6-8. It is part of the Beaverton SD 48J school district. It has about 976 students (a typical Oregon middle school has 491). About 52% of students are eligible for free or reduced-price lunch, compared with 71% at a typical Oregon middle school, which is useful context when reading test results.

In 2025-26 state tests, 64% in English language arts (similar schools: 43%) and 59% in math (similar schools: 31%) reached the state standard (% proficient). On our score, which compares it only with other Oregon middle schools, it scores 94.8 out of 100: better than 94% of them, ranking #11 of 202. Its English language arts result fell by 3 points from the year before. This overview is generated automatically from published state and federal data; figures are rounded, and you can check the originals via the official sources above.

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Page updated 2026-10-12.