For the 2026 school year, there is 1 public middle school serving 960 students in Mercer Island, WA. The top-ranked public middle school in Mercer Island, WA is Islander Middle School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Mercer Island, WA public middle school have an average math proficiency score of 74% (versus the Washington public middle school average of 37%), and reading proficiency score of 80% (versus the 51% statewide average). Middle schools in Mercer Island have an average ranking of 10/10, which is in the top 1% of Washington public middle schools.
Minority enrollment is 54% of the student body (majority Asian), which is more than the Washington public middle school average of 50% (majority Hispanic).
Best Public Middle Schools in Mercer Island, WA (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Islander Middle School
(Math: 74% | Reading: 80%)
Rank:
Rank:
10/
Top 5%10
8225 Se 72nd
Mercer Island, WA 98040
(206) 236-3413
Mercer Island, WA 98040
(206) 236-3413
Gr: 6-8 | 960 students Student-teacher ratio: 21:1 Minority enrollment: 54%
Frequently Asked Questions
What are the top-ranked public middle schools in Mercer Island, WA?
The top-ranked public middle schools in Mercer Island, WA include Islander Middle School. Mercer Island has one of the highest concentrations of top-ranked public schools in Washington.
How many public middle schools are located in Mercer Island?
1 public middle schools are located in Mercer Island.
What is the racial composition of students in Mercer Island?
Mercer Island public middle schools minority enrollment is 54% of the student body (majority Asian), which is more than the Washington public middle schools average of 50% (majority Hispanic).
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