Summary:
ZIP code 98596 has one high school, Winlock Senior High, serving grades 9–12 in the Winlock area. The school enrolls 226 students and is part of the Winlock School District. Its results show meaningful improvement in overall ranking, strong English Language Arts performance, and a clear need to strengthen math achievement.
Winlock Senior High improved from the 19th percentile in 2023–2024 to the 57th percentile in 2025–2026, while its rating rose from one to three stars. Academically, English Language Arts is the school’s strongest area: 63.04% of students were proficient in 2025–2026, compared with 33.06% in the district and 52.81% statewide. ELA performance also increased 7.48 percentage points from the prior year. Science was another relative strength, with 46.67% proficiency—well above the district’s 31.37%, though slightly below the state’s 50.95%.
Math is the most important area for improvement. Only 30.43% of students were proficient, which was above the district rate of 24.32% but below the state rate of 43.11%; math proficiency also declined 3.50 points year over year. The 2024–2025 graduation rate was 82.0%, matching the district and just below the state rate of 82.6%. Families should also consider the school’s context: about 60% of students qualified for free or reduced-price lunch, the student-teacher ratio was 22.9:1, and enrollment was relatively small, so annual results may fluctuate. Overall, the school offers particularly strong ELA performance and improving standing, while math support remains the clearest priority.
Thank you for your feedback!