Summary:
ZIP code 98391 has one high school, Bonney Lake High School, serving grades 9–12 with 1,643 students in the Bonney Lake area through the Sumner-Bonney Lake School District.
Bonney Lake High School has a strong overall profile for families considering high school options in this ZIP code. The school ranked in the 86th percentile statewide in 2025–2026, up from the 75th percentile three years earlier. Its 94.1% graduation rate was higher than both the district rate of 93.5% and the Washington rate of 82.6%. The school’s 2.1% dropout rate was also notably low, compared with 3.1% districtwide and 9.8% statewide. These results suggest that most students remain enrolled and complete high school successfully.
Academic results are strongest in English language arts, where 76.92% of students were proficient in 2025–2026—well above both the district and state averages. Math proficiency was 48.68%, higher than the state average but 11.55 percentage points below the district average, making math the clearest area for improvement. Science proficiency reached 57.66%, above the state but below the district overall; however, 11th-grade science was 5.28 points above the district. Compared with the prior year, science improved substantially, while ELA and math declined. Overall, the school offers strong graduation outcomes and above-state academic performance, with families likely to pay closest attention to ongoing math and ELA trends.
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