Summary:
ZIP code 98274 has three schools identified as elementary schools: Conway School District 317 serving grades K–8, Little Mountain Elementary serving K–5, and Big Lake Elementary School serving K–6. The schools are part of three different districts and vary considerably in enrollment, grade span, academic performance, and student needs, so rankings are best viewed as a starting point rather than a complete measure of school quality.
Conway School District 317 is the clear academic leader in the area. It ranks 245th of 1,138 schools statewide and has the highest proficiency in English language arts, math, and science. Its 2025–26 results were 56.73% in ELA, 57.82% in math, and 65.12% in science, all above Washington averages. It also has the strongest recent trend, improving its statewide rank from 476 to 245 over three years. Its standout grade-level results include 4th-grade math at 74.51% and 5th-grade science at 71.74%. The school serves more grades than the other two, including middle-school grades, which makes direct all-school comparisons less exact.
Big Lake Elementary School is the middle performer, with current proficiency of 46.75% in ELA, 34.21% in math, and 50.00% in science. It exceeds its Sedro-Woolley School District averages in all three subjects, but its ranking and proficiency declined recently, especially in math and science. Little Mountain Elementary ranks lowest overall, with 36.27% ELA, 30.57% math, and 26.00% science proficiency. It has shown some improvement and outperforms its Mount Vernon School District in selected areas, but remains below state averages. Little Mountain also serves a substantially higher share of students receiving free or reduced-price lunch, an important context when interpreting results; its lower student-teacher ratio and higher spending do not by themselves translate into higher scores.
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