Serving 960 students in grades 6-8, Islander Middle School ranks in the top 5% of all schools in Washington for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 74% (which is higher than the Washington state average of 41%). The percentage of students achieving proficiency in reading/language arts is 80% (which is higher than the Washington state average of 53%).
The student-teacher ratio of 21:1 is higher than the Washington state level of 17:1.
Minority enrollment is 54% of the student body (majority Asian), which is higher than the Washington state average of 53% (majority Hispanic and Asian).
Quick Facts (2026)
- Grades: 6-8
- Enrollment: 960 students
- Student-Teacher Ratio: 21:1
- Minority Enrollment: 54%
- Overall Testing Rank: Top 5% in WA
- Math Proficiency: 74% (Top 10%)
- Reading Proficiency: 80% (Top 10%)
- Science Proficiency: 77% (Top 10%)
- Source: National Center for Education Statistics (NCES), WA Dept. of Education
Top Rankings
Islander Middle School ranks among the top 20% of public schools in Washington for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Islander Middle School's student population of 960 students has declined by 6% over five school years.
The teacher population of 45 teachers has declined by 16% over five school years.
Grades Offered
Grades 6-8
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
960 students
Total Classroom Teachers
45 teachers
Year Founded
1905
School Calendar
School Rankings
Islander Middle School ranks within the top 5% of all 2,088 schools in Washington (based off of combined math and reading proficiency testing data).
The diversity score of Islander Middle School is 0.67, which is less than the diversity score at state average of 0.69. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#104 out of 2088 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
74%
41%
Reading/Language Arts Test Scores (% Proficient)
80%
53%
Science Test Scores (% Proficient)
77%
49%
Student-Teacher Ratio
21:1
17:1
American Indian
n/a
1%
Asian
32%
9%
Hispanic
8%
27%
Black
1%
5%
White
46%
47%
Hawaiian
n/a
2%
Two or more races
13%
9%
All Ethnic Groups
Eligible for Free Lunch
6%
39%
Eligible for Reduced Lunch
2%
9%
School Statewide Testing
School District Name
Mercer Island School District
Source: National Center for Education Statistics (NCES), WA Dept. of Education
Frequently Asked Questions
What is Islander Middle School's ranking?
Islander Middle School is ranked #104 out of 2,088 schools, which ranks it among the top 5% of public schools in Washington.
What percent of students have achieved state testing proficiency in math and reading?
74% of students have achieved math proficiency (compared to the 41% WA state average), while 80% of students have achieved reading proficiency (compared to the 53% WA state average).
How many students attend Islander Middle School?
960 students attend Islander Middle School.
What is the racial composition of the student body?
46% of Islander Middle School students are White, 32% of students are Asian, 13% of students are Two or more races, 8% of students are Hispanic, and 1% of students are Black.
What is the student-teacher ratio of Islander Middle School?
Islander Middle School has a student ration of 21:1, which is higher than the Washington state average of 17:1.
What grades does Islander Middle School offer ?
Islander Middle School offers enrollment in grades 6-8 (Supplemental Virtual).
What school district is Islander Middle School part of?
Islander Middle School is part of Mercer Island School District.
School Reviews
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