Mount Si High School

Mount Si High School operates as a roomy senior high in SNOQUALMIE, Washington, run under Snoqualmie Valley School District. Current enrollment sits at 2,152 students spanning grades 9 through 12. Enrollment runs roughly 276% bigger than the state mean of about 573.

Across the 13 schools in Snoqualmie Valley School District (7,145 students total), Mount Si High School accounts for its share of the district's footprint.

On the student-mix side, Mount Si High School logs that 71% of the student body identifies as White; the rest breaks down as 11% Hispanic, 9% Asian, 7% multiracial. The wider county runs roughly 55% White, putting the school's mix visibly more White than the area baseline.

On the income-and-resources front, The school lists 101 full-time-equivalent teachers, for a student-teacher ratio near 21.2:1. The state averages about 21.6:1, putting this campus right in line with peers. Roughly 13% of students at Mount Si High School qualify for free or reduced-price lunch, often used as a Title I proxy. That share is lower than King County's rate of about 38%.

On a demographically-adjusted basis, Mount Si High School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 71.4%, the actual is 66.7%, a residual of -4.7 points.

Zooming out to the county, community-level numbers for King County indicate median household earnings sit near $124,746, roughly 57% of adults have completed at least a four-year degree, and roughly 5% of residents live below the federal poverty line. Across King County's 544 public schools (combined enrollment of about 278,492 students), Mount Si High School is one campus in the mix.

The closest other public school is Two Rivers School, roughly 0.0 miles away. 8 of the 8 nearest public schools sit inside a five-mile radius. On composite proficiency, Mount Si High School comes 6th of 7 in the immediate cluster, below the nearby-schools average of 72.5%.

The school occupies a small-town site.

Trend over the last 7 years. Over the past 7-year window, the student count rose 17%: 1,840 students in 2018 compared to 2,152 in 2025. Over the same period, the White share contracted from 83% to 71%. The student-to-teacher ratio pulled in from 24.0:1 in 2018 to 21.2:1 today.

In the discussion threads here, recent activity here tends to focus on classroom updates, athletics, and weather closures. Members of the school community can share what they know.