Summary:
ZIP code 98596 has one middle school, Winlock Middle School, serving grades 6–8 in the Winlock area; the school enrolls about 160 students and is part of the Winlock School District.
Because Winlock Middle School is the only middle school in the ZIP code, there are no local school-to-school comparisons. The school’s 2025–2026 results were below both district and Washington averages in every reported subject. English Language Arts was the strongest area, with 26.14% of students meeting proficiency, compared with 33.06% in the district and 52.81% statewide. Math was weaker at 11.84%, compared with 24.32% in the district and 43.11% statewide. Science proficiency was 13.73%, below the district’s 31.37% and the state’s 50.95%. For parents, these results suggest that academic support in math and science should be important considerations, while ELA appears to be a relative strength even though it remains below state performance.
Performance varied considerably by grade. Seventh-grade ELA was a bright spot, with 39.22% of students proficient, while sixth- and eighth-grade ELA results were 20.37% and 18.75%. Math declined across the grades, from 16.98% proficiency in sixth grade to 12.00% in seventh and just 6.12% in eighth grade. Eighth grade was also the most concerning grade in science, with 13.73% proficient. Overall proficiency declined from the previous year in ELA, math, and science, and the school’s statewide ranking fell from the 27th percentile in 2023–2024 to the 6th percentile in 2025–2026. The school has a 15.7-to-1 student-teacher ratio, and 68.12% of students qualified for free or reduced-price lunch in 2024–2025, providing important context about the community the school serves.
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