Serving 2,095 students in grades 9-12, Mount Si High School ranks in the top 10% of all schools in Washington for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%) .
The percentage of students achieving proficiency in math is 70% (which is higher than the Washington state average of 50%). The percentage of students achieving proficiency in reading/language arts is 90% (which is higher than the Washington state average of 61%).
The student:teacher ratio of 22:1 is higher than the Washington state level of 16:1.
Minority enrollment is 26% of the student body (majority Hispanic), which is lower than the Washington state average of 50% (majority Hispanic).
Quick Stats (2024)
- Grades: 9-12
- Enrollment: 2,095 students
- Student:Teacher Ratio: 22:1
- Minority Enrollment: 26%
- Graduation Rate: 95% (Top 10% in WA)
- Overall Testing Rank: Top 10%
- Math Proficiency: 70% (Top 5%)
- Reading Proficiency: 90% (Top 5%)
- Source: National Center for Education Statistics (NCES), WA Dept. of Education
Top Rankings
Mount Si High School ranks among the top 20% of public schools in Washington for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Graduation Rate
School Overview
Mount Si High School's student population of 2,095 students has grown by 8% over five school years.
The teacher population of 97 teachers has grown by 21% over five school years.
Grades Offered
Grades 9-12
(offers virtual instruction)
(offers virtual instruction)
Total Students
2,095 students
Gender %
Total Classroom Teachers
97 teachers
Students by Grade
School Rankings
Mount Si High School ranks within the top 10% of all 2,052 schools in Washington (based off of combined math and reading proficiency testing data).
The diversity score of Mount Si High School is 0.43, which is less than the diversity score at state average of 0.68. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#127 out of 2052 schools
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
(18-19)70%
50%
Reading/Language Arts Test Scores (% Proficient)
(18-19)90%
61%
Student : Teacher Ratio
22:1
16:1
American Indian
n/a
1%
Asian
8%
9%
Hispanic
11%
25%
Black
1%
5%
White
74%
50%
Hawaiian
n/a
1%
Two or more races
6%
9%
All Ethnic Groups
Graduation Rate
(18-19)95%
84%
Eligible for Free Lunch
8%
36%
Eligible for Reduced Lunch
3%
7%
School Statewide Testing
School District Name
Source: 2021-2022 (latest school year available) National Center for Education Statistics (NCES), WA Dept. of Education
Frequently Asked Questions
What is Mount Si High School's ranking?
Mount Si High School is ranked #127 out of 2,052 schools, which ranks it among the top 10% of public schools in Washington.
What percent of students have achieved state testing proficiency in math and reading?
70% of students have achieved math proficiency (compared to the 50% WA state average), while 90% of students have achieved reading proficiency (compared to the 61% WA state average).
What is the graduation rate of Mount Si High School?
The graduation rate of Mount Si High School is 95%, which is higher than the Washington state average of 84%.
How many students attend Mount Si High School?
2,095 students attend Mount Si High School.
What is the racial composition of the student body?
74% of Mount Si High School students are White, 11% of students are Hispanic, 8% of students are Asian, 6% of students are Two or more races, and 1% of students are Black.
What is the student:teacher ratio of Mount Si High School?
Mount Si High School has a student ration of 22:1, which is higher than the Washington state average of 16:1.
What grades does Mount Si High School offer ?
Mount Si High School offers enrollment in grades 9-12 (offers virtual instruction).
What school district is Mount Si High School part of?
Mount Si High School is part of Snoqualmie Valley School District.
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