The top reported proficiency rate is 68% in English language arts. The lowest is 48% in Science.
Original Research by School Decision on Tumwater Middle School
Tumwater Middle School serves sixth through eighth grade in the Beaverton School District, located in the Portland neighborhood of the Cedar Mill area near the western edge of Washington County. The school opened in fall 2021 as the district’s ninth middle school, which means it is still relatively new and families in the area have experienced some shifts in feeder patterns as the district adjusted attendance boundaries.
The student body is large for a middle school. Racially and ethnically, the school is predominantly white, with a substantial Asian student population and smaller shares of Hispanic, multiracial, and Black students. About one in six students qualifies for free or reduced-price lunch, a rate that is modest in the context of Oregon’s public schools. Civil rights data on special education and English learner enrollment was not available, so a parent who wants to understand the full support landscape may wish to ask the school directly about those programs.
On state testing, Tumwater posts results that place it well above the typical middle school in Washington County. In math, proficiency rates are solidly above the midpoint across all three grades, with seventh graders performing especially strong. In English language arts, rates are also strong, with seventh graders again leading and eighth graders close behind. Eighth-grade science proficiency is lower than the other subjects, which is common for middle schools statewide. When measured across all tested subjects and grades, the school’s overall proficiency index sits in the top quartile among the county’s districts. The academic strength is concentrated in the core areas of math and reading, and the pattern is consistent across grade levels.
The housing market in the school’s zip code is expensive relative to the state and national benchmarks, with home values well above Oregon’s median. Rents follow the same pattern, and buying a home would carry a monthly cost that significantly exceeds typical rent. This context matters for a family considering the area: the neighborhood around the school is a high-cost market, and the financial calculus of moving into the attendance zone is different than it would be in a more affordable part of the region. The broader Portland metro area has seen a modest population decline since 2020, but development in the western suburbs has continued, and the area remains one of Oregon’s most economically active regions.
Portland itself is a dense, walkable city with extensive public transit, a strong civic culture, and a tech-and-outdoor-brand-driven economy. But Tumwater sits in the western portion of the city, closer to Beaverton and the suburban corridor, where the built environment is more typical of a suburban residential area with commercial arterials. The school’s location gives families access to Portland’s urban amenities while being in a quieter residential setting.
For a parent evaluating this school, the central story is one of strong academic performance in a well-resourced suburban setting. The testing data is clearly above the county norm, and the school is new enough that its facilities and programming reflect current educational thinking. The student body is diverse along racial and ethnic lines but economically homogenous, with a low share of low-income families. The housing cost is a real barrier for many households, which shapes the peer environment. A parent who values high proficiency rates and a recently built school will find a lot to like here. A parent who wants to understand special education or English learner supports will need to dig deeper with the school, since that data was not part of the available record.
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