Summary:
Snoqualmie Valley School District has two listed high schools serving grades 9–12 in the Snoqualmie area: Mount Si High School and Two Rivers School. Together, they enroll 2,208 students, although the schools are very different in size. Mount Si serves 2,152 students and accounts for 97.5% of the listed high-school enrollment, while Two Rivers serves 56 students. Both are listed at the same Snoqualmie address, which may indicate a shared campus or facility, although the available information does not explain their operating relationship.
Mount Si is the clear academic and ranking standout. It ranked 12th of 396 Washington high schools in 2025–26 and has remained near the top statewide in recent years. Its 2025–26 proficiency rates were 89.66% in English language arts, 63.22% in math, and 77.67% in science. The school also reported a 96.3% graduation rate and a 2.5% dropout rate for 2024–25, both favorable compared with state results. Math is Mount Si’s main relative weakness because it trails the district average, although its math proficiency improved from the prior year. Science also deserves monitoring after a notable year-over-year decline, while ELA remains especially strong.
Two Rivers offers a much smaller setting, with an 8.2-to-1 student-teacher ratio compared with Mount Si’s 21.2-to-1 ratio, but its academic results are more mixed. Its 2025–26 proficiency rates were 54.55% in ELA and 25% in math; its science result was suppressed. ELA improved slightly and was close to the state average, but math was well below both district and state levels. Two Rivers ranked 247th of 396 schools, down from 195th the previous year. Its small enrollment means that a few students can substantially affect percentages and rankings. Current school-specific graduation and dropout rates are unavailable; the latest reported figures, from 2021–22, were 81.8% graduation and 18.1% dropout.
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