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Public School Review - Established 2003

Best Mercer Island Public Schools (2026)

For the 2026 school year, there are 6 public schools serving 3,993 students in Mercer Island, WA (there are 7 private schools, serving 1,165 private students). 80% of all K-12 students in Mercer Island, WA are educated in public schools (compared to the WA state average of 91%). Mercer Island has one of the highest concentrations of top-ranked public schools in Washington.
The top-ranked public schools in Mercer Island, WA are Island Park Elementary School, Lakeridge Elementary School and Mercer Island High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Mercer Island, WA public schools have an average math proficiency score of 79% (versus the Washington public school average of 41%), and reading proficiency score of 85% (versus the 53% statewide average). Schools in Mercer Island have an average ranking of 10/10, which is in the top 1% of Washington public schools.
Minority enrollment is 52% of the student body (majority Asian), which is less than the Washington public school average of 53% (majority Hispanic).

Best Public Schools in Mercer Island, WA (2026)

School
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Island Park Elementary School
(Math: 85-89% | Reading: 90-94%)
Rank:
10/
10
Top 1%
5437 Island Crest Way
Mercer Island, WA 98040
(206) 236-3410
Gr: K-5 | 364 students Student-teacher ratio: 15:1 Minority enrollment: 44%
Rank: #22.
Lakeridge Elementary School
(Math: 87% | Reading: 88%)
Rank:
10/
10
Top 5%
8215 Se 78th
Mercer Island, WA 98040
(206) 236-3415
Gr: K-5 | 401 students Student-teacher ratio: 17:1 Minority enrollment: 56%
Rank: #33.
Mercer Island High School
(Math: 81% | Reading: 94%)
Rank:
10/
10
Top 5%
9100 Se 42nd
Mercer Island, WA 98040
(206) 236-3345
Gr: 9-12 | 1,439 students Student-teacher ratio: 19:1 Minority enrollment: 48%
Rank: #44.
West Mercer Elementary School
(Math: 85% | Reading: 86%)
Rank:
10/
10
Top 5%
4141 81st Ave Se
Mercer Island, WA 98040
(206) 236-3430
Gr: K-5 | 431 students Student-teacher ratio: 17:1 Minority enrollment: 58%
Rank: #55.
Islander Middle School
(Math: 74% | Reading: 80%)
Rank:
10/
10
Top 5%
8225 Se 72nd
Mercer Island, WA 98040
(206) 236-3413
Gr: 6-8 | 960 students Student-teacher ratio: 21:1 Minority enrollment: 54%
Rank: #66.
Northwood Elementary School
(Math: 70-74% | Reading: 75-79%)
Rank:
10/
10
Top 10%
4030 86th Ave Se
Mercer Island, WA 98040
(253) 841-8740
Gr: PK-5 | 398 students Student-teacher ratio: 15:1 Minority enrollment: 54%

Frequently Asked Questions

What are the top-ranked public schools in Mercer Island, WA?
The top-ranked public schools in Mercer Island, WA include Island Park Elementary School, Lakeridge Elementary School and Mercer Island High School. Mercer Island has one of the highest concentrations of top-ranked public schools in Washington.
How many public schools are located in Mercer Island?
6 public schools are located in Mercer Island.
What percentage of students in Mercer Island go to public school?
80% of all K-12 students in Mercer Island are educated in public schools (compared to the WA state average of 91%).
What is the racial composition of students in Mercer Island?
Mercer Island public schools minority enrollment is 52% of the student body (majority Asian), which is less than the Washington public schools average of 53% (majority Hispanic).
Which public schools in Mercer Island are often viewed compared to one another?

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