Beaver Lake Middle School, Issaquah WA

Original Research by School Decision on Beaver Lake Middle School

Beaver Lake Middle School is a regular public school in Issaquah, Washington, serving grades six through eight. It sits within the Issaquah School District, a system that has seen enrollment fluctuate in recent years and that placed a major capital bond measure before voters in early 2024 to fund construction, renovations, and safety upgrades across its schools. For a family considering this school, the key takeaway is straightforward: by state test results, Beaver Lake is a high-performing middle school whose students, as a group, score well above most peers in King County.

State assessment data from the 2024–25 school year shows that across math, English language arts, and science, a large majority of Beaver Lake students met the state’s proficiency standard. In every tested grade and subject, the share of students reaching proficiency was consistently strong, with eighth-grade ELA and seventh-grade math standing out. When compared against districts across King County, Beaver Lake’s overall proficiency index lands in the top quartile. That is a meaningful distinction in a county with many well-regarded districts. The school’s performance is especially notable given that these results come from a single year of testing; there is no multi-year trend yet to assess direction, but the current snapshot is clearly a positive one.

The student body is large for a middle school, and it is racially and ethnically diverse. Students of Asian background make up the largest group, followed by white students. Students who identify as two or more races form a substantial share, and Hispanic students represent a smaller but noticeable presence. The share of students who qualify for free or reduced-price lunch is low, a figure that aligns with the area’s overall economic profile. Issaquah itself is a city that has grown rapidly in recent decades, shifting from a mining and lumber town to a suburban hub home to Costco’s global headquarters and other major employers. The housing market is expensive: home values and rents are well above national medians, and the cost of entry is high. Many families who send children to Beaver Lake likely live in single-family neighborhoods or newer multifamily developments on the city’s east side near the school.

Because Beaver Lake is a middle school, there is no graduation rate to report, and no chronic absenteeism data was available in the source material. Information on special education identification and English learner enrollment was also missing from the data provided. A parent may want to ask the school directly about those populations and about the support systems in place. Likewise, no discipline data or course access information was available, so questions about program offerings—such as advanced coursework or electives—are best directed to the school’s website or a school visit.

The school’s setting is suburban, located in a neighborhood of Issaquah’s plateau area, with I-90 providing access to Seattle and Bellevue. The city’s historic downtown and its transit centers are a short drive away. The broader Issaquah School District serves a wide area that includes parts of Sammamish and unincorporated King County, so the peer environment a student encounters may reflect a mix of these communities. For families who place a high priority on strong academic results in a middle school that is part of a district investing in its facilities, Beaver Lake presents a compelling option. The main consideration is the cost of housing in the attendance zone, which is high, and the fact that some student-support data is not readily visible in the available public records.

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Academic performance

How students perform on state tests, by grade, set against the district.

Math

Grade 681%

School 81% · District 40% · ▲ 41 pts above district

▲ 44 pts above state median · ▲ 29 pts above county median

Grade 785%

School 85% · District 43% · ▲ 42 pts above district

▲ 47 pts above state median · ▲ 30 pts above county median

Grade 881%

School 81% · District 74% · ▲ 7 pts above district

▲ 47 pts above state median · ▲ 29 pts above county median

English language arts

Grade 684%

School 84% · District 76% · ▲ 9 pts above district

▲ 37 pts above state median · ▲ 24 pts above county median

Grade 784%

School 84% · District 79% · ▲ 6 pts above district

▲ 34 pts above state median · ▲ 22 pts above county median

Grade 888%

School 88% · District 78% · ▲ 10 pts above district

▲ 38 pts above state median · ▲ 22 pts above county median

Science

Grade 882%

School 82% · District 72% · ▲ 9 pts above district

▲ 39 pts above state median · ▲ 21 pts above county median

This schoolIssaquah School District, same grade

Graduation rate (ACGR) reflects the federally published Adjusted Cohort Graduation Rate for the most recent year available. We refresh this data annually at the close of each academic year in June. The federal source publishes a banded rate (for example, "90-94%") instead of an exact number for cohorts small enough to risk identifying individual students. The state distribution chart, where shown, plots every school in the state with a published rate or band; schools whose rate is federally suppressed are excluded. Where the federal source publishes a band rather than an exact rate, the school is placed within its band using a stable, ID-derived offset, so its position is consistent across visits.

Proficiency by household income

English language arts

Grade 5Lower-income33%Higher-income78%45 pp gap

Grade 6Lower-income63%Higher-income86%23 pp gap

Grade 7Lower-income44%Higher-income91%47 pp gap

Grade 8Lower-income67%Higher-income90%23 pp gap

Mathematics

Grade 5Lower-income27%Higher-income62%35 pp gap

Grade 6Lower-income53%Higher-income84%32 pp gap

Grade 7Lower-income47%Higher-income90%44 pp gap

Grade 8Lower-income53%Higher-income83%30 pp gap