For the 2026 school year, there are 5 public elementary schools serving 2,554 students in Mercer Island, WA. The top-ranked public elementary schools in Mercer Island, WA are Island Park Elementary School, Lakeridge Elementary School and West Mercer Elementary School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Mercer Island, WA public elementary schools have an average math proficiency score of 78% (versus the Washington public elementary school average of 43%), and reading proficiency score of 83% (versus the 51% statewide average). Elementary schools in Mercer Island have an average ranking of 10/10, which is in the top 1% of Washington public elementary schools.
Minority enrollment is 54% of the student body (majority Asian), which is more than the Washington public elementary school average of 53% (majority Hispanic).
Best Public Elementary Schools in Mercer Island, WA (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Island Park Elementary School
(Math: 85-89% | Reading: 90-94%)
Rank:
Rank:
10/
Top 1%10
5437 Island Crest Way
Mercer Island, WA 98040
(206) 236-3410
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:
Rank:
10/
Top 5%10
8215 Se 78th
Mercer Island, WA 98040
(206) 236-3415
Mercer Island, WA 98040
(206) 236-3415
Gr: K-5 | 401 students Student-teacher ratio: 17:1 Minority enrollment: 56%
Rank: #33.
West Mercer Elementary School
(Math: 85% | Reading: 86%)
Rank:
Rank:
10/
Top 5%10
4141 81st Ave Se
Mercer Island, WA 98040
(206) 236-3430
Mercer Island, WA 98040
(206) 236-3430
Gr: K-5 | 431 students Student-teacher ratio: 17:1 Minority enrollment: 58%
Rank: #44.
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%
Rank: #55.
Northwood Elementary School
(Math: 70-74% | Reading: 75-79%)
Rank:
Rank:
10/
Top 10%10
4030 86th Ave Se
Mercer Island, WA 98040
(253) 841-8740
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 elementary schools in Mercer Island, WA?
The top-ranked public elementary schools in Mercer Island, WA include Island Park Elementary School, Lakeridge Elementary School and West Mercer Elementary School. Mercer Island has one of the highest concentrations of top-ranked public schools in Washington.
How many public elementary schools are located in Mercer Island?
5 public elementary schools are located in Mercer Island.
What is the racial composition of students in Mercer Island?
Mercer Island public elementary schools minority enrollment is 54% of the student body (majority Asian), which is more than the Washington public elementary schools average of 53% (majority Hispanic).
Which public elementary schools in Mercer Island are often viewed compared to one another?
Popular comparisons of public elementary schools in Mercer Island include: Northwood Elementary School vs. West Mercer Elementary School, West Mercer Elementary School vs. Northwood Elementary School, Lakeridge Elementary School vs. West Mercer Elementary School
Recent Articles
AI Report Cards: Should Schools Evaluate AI Use?
Explore whether schools should assess student AI use, the benefits, risks, and what responsible AI report cards could look like in 2026.
The Parent’s Guide to School Cell Phone Bans in 2026
Learn how school cell phone bans work in 2026, why districts are adopting them, and what parents should expect.
Parental Involvement in Public Schools: 2026 Update
Explore the latest 2026 trends, research, and strategies shaping parental involvement in public schools and student success.