Mount Si High School
🇺🇸 Official data · 2025Snoqualmie, Washington 98065 · Snoqualmie Valley School District
#11 of 333 high schools in Washington
#1353 of 16,910 nationally
About Mount Si High School
Mount Si High School is a public high located in Snoqualmie, in the Snoqualmie Valley School District school district of Washington, United States. It caters for Grades 9–12. In 2025 it enrolled 2,152 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 79.5 out of 100, placing it in the top 10% of high schools in United States and 11th of 333 ranked high schools in Washington. Its strongest component is community advantage (fewer free/reduced-price lunch) (97th percentile), and its weakest is students per teacher (13th percentile).
Other published figures: enrollment 2,152.
There are 7 schools in Snoqualmie; Mount Si High School ranks 4th of 7 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)70%
- Reading proficiency (30%)90%
- Community advantage (fewer free/reduced-price lunch) (25%)13.2%
- Students per teacher (15%)21.3
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Mount Si High School by the official sources.
- Enrollment
- 2,152
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 13.2%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 21.3
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 90%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 70%
- Share of tested students proficient or above (all students, all grades).
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Schools near Mount Si High School
Closest schools by straight-line distance, with their Success Index (US).
Two Rivers School
Snoqualmie · Public high · Grades 9–12
56 students · 0 m away
Snoqualmie Elementary
Snoqualmie · Public elementary · Grades PK–5
547 students · 456 m away
Snoqualmie Middle School
Snoqualmie · Public middle · Grades 6–8
496 students · 569 m away
North Bend Elementary School
North Bend · Public elementary · Grades K–5
466 students · 4.3 km away
Cascade View Elementary School
Snoqualmie · Public elementary · Grades K–5
493 students · 4.6 km away
Timber Ridge Elementary School
Snoqualmie · Public elementary · Grades K–5
607 students · 4.9 km away
Edwin R Opstad Elementary
North Bend · Public elementary · Grades K–5
581 students · 6.0 km away
Echo Glen School
Snoqualmie · Public high · Grades 5–12
104 students · 6.4 km away
Fall City Elementary
Fall City · Public elementary · Grades K–5
456 students · 7.9 km away
Chief Kanim Middle School
Fall City · Public middle · Grades 6–8
520 students · 8.4 km away
Similar schools
Public high schools in Washington with a comparable Enrollment.
Henry M. Jackson High School
Mill Creek · Public high · Grades 9–12
2,148 students
Sunnyside High School
Sunnyside · Public high · Grades 9–12
2,122 students
Kentridge High School
Kent · Public high · Grades 9–12
2,186 students
Mariner High School
Everett · Public high · Grades 9–12
2,106 students
Lake Stevens Sr High School
Lake Stevens · Public high · Grades 10–12
2,205 students
Graham Kapowsin High School
Graham · Public high · Grades 9–12
2,087 students
Frequently asked questions
Is Mount Si High School a good school?
Mount Si High School has a Success Index (US) of 79.5 out of 100 (Top 10% of high schools in United States) and ranks #11 of 333 in Washington. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Mount Si High School rank in Washington?
Mount Si High School ranks #11 of 333 high schools in Washington and #1353 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Mount Si High School?
Mount Si High School had 2,152 students in 2025.
Is Mount Si High School a elementary school or a high school?
Mount Si High School is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Mount Si High School?
There are 10 schools within 15 km of Mount Si High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.