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Very Good

#571 of 2,225 schools in WA

Top 26% in state

Mount Si High School

High School · Snoqualmie Valley School District

8651 MEADOWBROOK WAY SE, Snoqualmie, WA 98065

Enrollment

2,172

Student-Teacher

21.7:1

Score

7.5

Grades

9th – 12th

Updated 2022-23

How this school compares

In Snoqualmie

#4 of 5

public schools

Washington high schools

#57 of 476

In district

#8 of 12

Snoqualmie Valley School District

Equity

9.3 / 10

Exceptional

About Mount Si High School

Mount Si High School serves 2,172 students in grades 9 through 12 in Snoqualmie, Washington, with a student-teacher ratio of 21.7:1 and 100 full-time equivalent teachers. This regular public school has earned strong recognition, ranking #225 out of 2,261 schools statewide, placing it in the 90th percentile of Washington high schools with a MySchoolScout rating of 7.6 out of 10. The school demonstrates impressive academic performance with an academic score of 9.8 out of 10.

Students excel particularly in English Language Arts and Reading, with 89% achieving proficient or above levels across grade levels. This strong academic showing reflects the commitment of both the school community and its students. Mount Si High School is situated in an affluent community where 65% of residents hold bachelor's degrees or higher, and the median household income reaches $175,750.

The surrounding neighborhood in ZIP code 98065 features a median home value of $815,100 and maintains an exceptionally low poverty rate of just 0.4% among its 15,960 residents. The school operates in a town setting on the fringe of an urban area, providing students with both suburban tranquility and access to metropolitan opportunities.

What Parents Should Know

Mount Si High School is a large school with 2,172 students enrolled. Larger schools typically offer a wider range of academic programs, electives, and extracurricular activities. Parents may want to ask about how the school maintains a sense of community and ensures students don't get lost in the crowd.

The student-teacher ratio at Mount Si High School is 21.7:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress7.5Very Good25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data3
Annual Change-1.35 pts/yr
Data Period2019–2024
TrendDeclining
Academics8.9Excellent25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency57.5%
Reading/ELA Proficiency89.1%
Math vs. State Avg+26 pts
Reading vs. State Avg+27.9 pts
Overall Proficiency73%
Expected (poverty-adj.)68%
vs. Expected+5.2 pts
Adjusted Percentile83th
College Readiness9.4Exceptional30%
Graduation rates, AP course participation, and IB availability.
View breakdown
AP Participation30.5%
IB ProgramNo
Resources & Environment3.0Fair20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio21.7:1
Per-Pupil Spending$15,815

Mount Si High School — Students at Mount Si High School score 73% proficient, which is above what's typical for similar communities (expected: 68%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

12.8%

Students qualifying for federal meal assistance

Test Scores WA SBA (2023-24)

Math Proficiency 61.7%
School
State
35.8%
ELA Proficiency 89.3%
School
State
55.9%

Based on 9 test records from WA state assessments. About our data

Proficiency Trend

↓ Declining

Average proficiency (% at or above grade level) across Math & ELA over time.

2019
Math
70%
ELA
90%
2022
ELA
89%
2024
Math
57.5%
ELA
89.1%

Source: EdFacts (NCES) and state assessment data. Growth score: 7.5/10.

How Mount Si High School Compares

See how Mount Si High School performs across key quality dimensions compared to state benchmarks.

Overall Score
7.5/10
74th percentile in WA
Academic
8.9/10
8.9/10
Growth
7.5/10
Above average
Environment
3.0/10
Below average

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
13%
Teaching Staff
22:1 student-teacher ratio
100 teachers

Location

8651 MEADOWBROOK WAY SE, Snoqualmie, WA 98065

Nearby Alternatives

Families considering Mount Si High School may also want to explore other high schools in the area. CLIP (rated 6.8/10, 9.9 miles away, in nearby Carnation), with a comparable rating. Another option is Echo Glen School (rated 5.4/10, 4.0 miles away), a more accessible option. Additionally, Two Rivers School (rated 5.1/10), a more accessible option. For more schools in Snoqualmie, see our Snoqualmie schools guide .

Nearby Schools

20 within 8.9 mi
School Distance Rating
Two Rivers School Snoqualmie 0.0 mi 5.1
Snoqualmie Parent Partnership Program Snoqualmie 0.4 mi 6.6
Snoqualmie Middle School Snoqualmie 0.4 mi 7.7
Snoqualmie Elementary Snoqualmie 0.3 mi 9.2
Snoqualmie Access Snoqualmie 0.7 mi
North Bend Elementary School North Bend 2.7 mi 9.2
Cascade View Elementary School Snoqualmie 2.8 mi 8.8
Timber Ridge Elementary School Snoqualmie 3.0 mi 8.3
Edwin R Opstad Elementary North Bend 3.8 mi 8.8
Echo Glen School Snoqualmie 4.0 mi 5.4
Fall City Elementary Fall City 4.9 mi 7.8
Chief Kanim Middle School Fall City 5.2 mi 7.4
Twin Falls Middle School North Bend 5.8 mi 4.2
Tolt Middle School Carnation 9.4 mi 6.2
PARADE Carnation 9.9 mi 6.7
CLIP Carnation 9.9 mi 6.8
Carnation Elementary School Carnation 9.9 mi 7.5
Cascade Ridge Elementary Sammamish 8.7 mi 9.2
Endeavour Elementary School Issaquah 8.7 mi 9.1
Grand Ridge Elementary Issaquah 8.9 mi 8.9

Neighborhood Census ACS (2019-2023)

Census data for ZIP 98065 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$182,132

Median Home Value

$890,300

Median Rent

$3,052/mo

Population

16,061

College Educated

64.1%

Homeownership

84.7%

Avg Commute

30.2 min

Poverty Rate

0.6%

Median Age

38

Community Profile

The community surrounding Mount Si High School has a median household income of $182,132. It is a well-educated community where 64% of adults hold a bachelor's degree or higher. The median home value in the area is $890,300, with a median rent of $3,052/month. The local poverty rate of 0.6% is relatively low. The average commute for residents is 30 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
Bellevue High School Bellevue, WA 7.5
North Creek High School Bothell, WA 7.5
Ballard High School Seattle, WA 7.6
Bothell High School Bothell, WA 7.4
Juanita High School Kirkland, WA 7.4
Lake Washington High School Kirkland, WA 7.4

Frequently Asked Questions

Common questions about Mount Si High School

What grades does Mount Si High School serve?

Mount Si High School serves students in grades 9th through 12th.

How many students attend Mount Si High School?

Mount Si High School has an enrollment of approximately 2,172 students.

What is the student-teacher ratio at Mount Si High School?

The student-teacher ratio at Mount Si High School is 21.7:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Mount Si High School rank in WA?

Mount Si High School is ranked #571 out of 2,225 schools in WA.

What is Mount Si High School's MySchoolScout rating?

Mount Si High School has a composite rating of 7.5 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.

What are the test scores at Mount Si High School?

Based on the most recent state assessment data, Mount Si High School has 61.7% math proficiency and 89.3% reading/ELA proficiency.

Is Mount Si High School a charter school?

No, Mount Si High School is not a charter school. It is a traditional public school operated by the local school district.

Is Mount Si High School a Title I school?

No, Mount Si High School is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Mount Si High School?

12.8% of students at Mount Si High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

11 schools nearby View map →

Neighborhood Context

Walk Score
47 Car-Dependent
Bike Score
43 Somewhat Bikeable
City Safety
Elevated (1,131/100K)

Powered by Walk Score

FBI UCR 2024. City-level (Snoqualmie). Data >1 year old.

Quick Facts NCES CCD (SY 2022-23)

Grades
9th – 12th
Enrollment
2,172
Student-Teacher Ratio
21.7:1
Teachers (FTE)
100
Free/Reduced Lunch
12.8%
Type
regular
Setting
Fringe Town
County
King County
Data Year
2023–2024

District

Snoqualmie Valley School District
District Enrollment
7,161
Schools in District
13
Per-Pupil Spending
$17,506
District Rank
#8 of 12

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

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