Best Public Schools in Cosmopolis, WA

Cosmopolis, Washington, has two listed public schools serving 229 students: Cosmopolis Elementary School serves grades K–6, while North River School is a small alternative school serving grades PK–12. The schools operate in separate districts and serve very different grade ranges and educational models, so their results are useful for broad comparison but should not be viewed as perfectly equivalent.

Based on 2025–2026 testing, North River had the stronger overall results. It reported proficiency rates of 51.61% in English language arts, 34.48% in math, and 53.85% in science, compared with 41.38%, 26.44%, and 42.86% at Cosmopolis Elementary. North River was close to the Washington average in ELA and exceeded the state science rate, although math was its weakest subject. Cosmopolis Elementary trailed the state in all three subjects, with the largest gap in math. Still, its results improved notably in ELA compared with the prior year, while math and science declined.

For families considering Cosmopolis Elementary School, the clearest academic concern is math in grades 3–5, where proficiency was well below statewide levels. Sixth grade was a bright spot: ELA reached 52% and math 40%, approximately matching or exceeding state rates. North River School had much smaller enrollment, a lower student-teacher ratio, and higher reported spending per student, characteristics that may reflect its alternative PK–12 structure. Current school-level graduation data were not available, and many North River grade-specific results were suppressed because of small group sizes. The schools are associated with the Cosmopolis School District and North River School District.