Summary:
ZIP code 98270 includes eight elementary schools in Marysville, serving kindergarten or pre-kindergarten through sixth grade within the Marysville School District. Together, the schools enroll about 3,077 students, and all eight outperform the district in 2025–2026 math proficiency, although the group remains below Washington’s statewide averages overall. Results vary considerably by school, grade, and subject, so parents should look beyond a single ranking or test score.
The strongest overall results come from Marysville Coop Program, which ranked in the 81st statewide percentile and posted the highest reported ELA and math proficiency rates. Its smaller enrollment of 150 students means annual results may fluctuate more than at larger schools. Among traditional neighborhood schools, Grove Elementary has the strongest and most balanced profile, ranking at the 50th percentile and improving in ELA, math, and science. Sunnyside Elementary has the area’s best reported science performance, exceeding the state average. Kellogg Marsh Elementary School produced an exceptional 72.97% proficiency rate in third-grade math, though performance varies noticeably across grades.
Other schools show encouraging or mixed patterns. Liberty Elementary improved substantially in its statewide ranking and exceeded the district in ELA and math. Allen Creek Elementary School had relatively strong science results but weaker ELA and math, while Cascade Elementary showed a higher ranking than its subject scores alone might suggest. Pinewood Elementary experienced the sharpest year-over-year decline, with substantial drops in all three subjects. Across the area, sixth-grade math is a common concern, and the Coop’s 2025–2026 science result was suppressed, meaning it is unknown rather than zero.
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