Top Rankings
Mercer Island School District ranks among the top 20% of public school district in Washington for:
Category
Attribute
Overall Rank
Highest overall rank (Top 1%)
Math Proficiency
Highest math proficiency (Top 1%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 1%)
Science Proficiency
Highest science proficiency (Top 1%)
Graduation Rate
Highest graduation rate (Top 5%)
Diversity
Most diverse schools (Top 1%)
For the 2025 school year, there are 5 public elementary schools serving 2,510 students in Mercer Island School District. This district's average elementary testing ranking is 10/10, which is in the top 1% of public elementary schools in Washington.
Public Elementary Schools in Mercer Island School District 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).
The top ranked public elementary schools in Mercer Island School District 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. Minority enrollment is 53% of the student body (majority Asian), which is more than the Washington public elementary school average of 52% (majority Hispanic).
Overview
This School District
This State (WA)
# Schools
6 Schools
1,833 Schools
# Students
3,975 Students
740,174 Students
# Teachers
217 Teachers
44,879 Teachers
Student : Teacher Ratio
18:1
18:1
Student By Grade
District Rank
Mercer Island School District, which is ranked within the top 1% of all 306 school districts in Washington (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 94% has decreased from 95% over five school years.
Overall District Rank
#1 out of 307 school districts
(Top 1%)
(Top 1%)
Math Test Scores (% Proficient)
79%
41%
Reading/Language Arts Test Scores (% Proficient)
85%
53%
Science Test Scores (% Proficient)
81%
49%
Graduation Rate
94%
84%
Students by Ethnicity:
Diversity Score
0.66
0.69
% American Indian
n/a
1%
% Asian
28%
9%
% Hispanic
7%
26%
% Black
1%
5%
% White
49%
48%
% Hawaiian
n/a
2%
% Two or more races
15%
9%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $20,484 is higher than the state median of $18,796. The school district revenue/student has grown by 5% over four school years.
The school district's spending/student of $18,521 is less than the state median of $19,246. The school district spending/student has grown by 5% over four school years.
Total Revenue
$81 MM
$20,715 MM
Spending
$74 MM
$21,212 MM
Revenue / Student
$20,484
$18,796
Spending / Student
$18,521
$19,246
Best Mercer Island School District Public Elementary Schools (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
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
Grades: K-5
| 361 students
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
Grades: K-5
| 403 students
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
Grades: K-5
| 410 students
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
Grades: 6-8
| 938 students
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
Grades: PK-5
| 398 students
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