Original Research by School Decision on Mount Si High School
Mount Si High School serves the Snoqualmie Valley School District as its comprehensive high school, drawing students from Snoqualmie and the surrounding area. The school is a large public high school serving grades nine through twelve. It sits in a community that blends a historic railroad town core with a master-planned residential area called Snoqualmie Ridge, which was developed on annexed land beginning in the 1990s. The city has seen sustained residential and commercial growth since that annexation, with new projects continuing. Major employers in the area include a large manufacturing plant for oral healthcare products, a business park housing technology and county government offices, and a casino operated by the Snoqualmie Indian Tribe. The district itself recently adopted a new K-5 English Language Arts curriculum and opened a consolidated Early Learning Center in a renovated building.
The student body is predominantly white, with a sizable Hispanic population and a smaller but present Asian student group. A modest share of students qualify for free or reduced-price lunch, which is below what many public schools serving a full community typically see. The high school is a regular public school and is not a charter or magnet school. The data provided does not include a Title I status, a count of students with disabilities, or the share of English learners, so a parent would want to ask the school about the full range of student support services available.
On state assessments, Mount Si High School shows strong results in English language arts and science, with proficiency rates well into the upper ranges. Mathematics proficiency is lower than those two subjects, landing in a moderate range. This pattern is not uncommon at the high school level, but a family whose student needs strong math support should look into what interventions, course sequences, and tutoring options the school provides. Only a single year of test data was available for this school, so it is not possible to see trends or whether these scores are improving or declining over time. The graduation rate, chronic absenteeism rate, and a composite proficiency index were not available in the data. The school serves only high school grades, so the absence of a graduation rate may be a data gap rather than a meaningful signal, but it is worth noting that a reader cannot confirm how many students finish here. The school environment section, which would cover discipline rates and course access, was also absent from the data.
The housing market in the area is expensive, with home values well above national and state benchmarks. Rents are also high. This means the families attending Mount Si High come from a community with a high cost of living, and the school itself has a correspondingly low share of students from low-income households. The community features a historic downtown with shops, a railway museum, and a major waterfall attraction that draws many visitors. The Snoqualmie Valley Trail network connects parks and public spaces. Outside the historic core, the built environment is more suburban and car-oriented, particularly in the Snoqualmie Ridge master-planned area.
The district operates under a voter-approved levy that funds a portion of its operating budget, and this directly affects property tax levels for residents. A parent considering this school should weigh the strong English and science scores against the more modest math results, and the absence of trend data makes it harder to gauge direction. The school serves a large student population in a growing, high-cost community with a significant tourism and business park employment base.
See more original research from School Decision →