Summary:
ZIP code 98537 has one elementary school, Cosmopolis Elementary School, serving students in kindergarten through sixth grade in the Cosmopolis School District. With 175 students and a 16.5-to-1 student-teacher ratio, it is a small school where year-to-year results may vary because relatively small groups of students can significantly affect reported percentages. Since there is only one elementary school in the ZIP code, families cannot compare it with another local elementary school.
The school’s strongest results are in sixth grade. Sixth-grade ELA proficiency was 52%, above the Washington average of 48.27%, while sixth-grade math was 40%, essentially matching the state average of 39.79%. ELA also improved across the tested grades, rising from 31.58% in third grade to 52% in sixth grade. Overall, 2025–2026 proficiency was 41.38% in ELA, 26.44% in math, and 42.86% in science, compared with statewide rates of 52.81%, 43.11%, and 50.95%. ELA improved by 11.27 percentage points from the prior year, but math fell by 9.04 points and science declined by 8.99 points.
For parents, the clearest area to examine is math instruction in grades 3–5. Math proficiency was 26.32% in third grade, 18.18% in fourth grade, and 19.05% in fifth grade, substantially below state averages; fourth grade had the largest gap, trailing Washington by 31.36 points. Science results have been inconsistent, with the school above the state average in 2024–2025 but below it the following year. The school’s ranking improved recently from the 24th to the 30th percentile and from one star to two stars, although it remains below the statewide midpoint. More than half of students qualify for free or reduced-price lunch, and reported spending was $21,884 per student, providing useful context when considering the school’s support needs and resources.
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