Mercer Island School District

4160 86th Ave Se
Mercer Island, WA 98040-4196
(District boundaries shown in map)
10/
10
Top 1%

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 10%)
Diversity
Most diverse schools (Top 1%)
For the 2025 school year, there is 1 public middle school serving 938 students in Mercer Island School District.
Public Middle School in Mercer Island School District have an average math proficiency score of 76% (versus the Washington public middle school average of 36%), and reading proficiency score of 80% (versus the 51% statewide average).
Minority enrollment is 52% of the student body (majority Asian), which is more than the Washington public middle school average of 50% (majority Hispanic).

Overview

This School District
This State (WA)
# Schools
6 Schools
800 Schools
# Students
3,975 Students
302,560 Students
# Teachers
217 Teachers
16,189 Teachers
Student : Teacher Ratio
18:1
18:1

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 2021-2022 school year.
The school district's graduation rate of 92% has decreased from 94% over five school years.
This School District
State Average (WA)
#1 out of 307 school districts
(Top 1%)
This chart displays the overall district rank of Mercer Island   School District, with the latest 2021-22 school year data.
80%
40%
This chart displays the percentage of public school students that scored at or above 'proficient' levels in Math of Mercer Island   School District and the percentage of public school students that scored at or above 'proficient' levels in Math of Washington by year, with the latest 2021-22 school year data.
85%
53%
This chart displays the percentage of public school students that scored at or above 'proficient' levels in Reading/Language Arts of Mercer Island   School District and the percentage of public school students that scored at or above 'proficient' levels in Reading/Language Arts of Washington by year, with the latest 2021-22 school year data.
81%
49%
92%
84%
This chart displays public school graduation rate of Mercer Island   School District and public school graduation rate of Washington by year, with the latest 2021-22 school year data.

Students by Ethnicity:

0.66
0.68
# American Indian Students
4 Students
5,703 Students
% American Indian Students
n/a
2%
# Asian Students
1,088 Students
23,666 Students
% Asian Students
28%
8%
# Hispanic Students
289 Students
73,370 Students
% Hispanic Students
7%
25%
# Black Students
40 Students
13,426 Students
% Black Students
1%
5%
# White Students
1,951 Students
148,736 Students
% White Students
49%
50%
# Hawaiian Students
6 Students
3,970 Students
% Hawaiian Students
n/a
1%
# Two or more races Students
578 Students
26,275 Students
% of Two or more races Students
15%
9%

Students by Grade:

# Students in PK Grade:
38
1,563
# Students in K Grade:
183
3,945
# Students in 1st Grade:
261
4,184
# Students in 2nd Grade:
282
4,295
# Students in 3rd Grade:
279
4,473
# Students in 4th Grade:
256
4,820
# Students in 5th Grade:
273
7,072
# Students in 6th Grade:
326
71,936
# Students in 7th Grade:
306
81,343
# Students in 8th Grade:
306
82,029
# Students in 9th Grade:
337
11,117
# Students in 10th Grade:
357
8,145
# Students in 11th Grade:
370
8,299
# Students in 12th Grade:
401
9,339
# Ungraded Students:
-
-

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.
This School District
This State (WA)
Total Revenue
$81 MM
$20,715 MM
This chart displays total revenue of Mercer Island   School District and median value from total revenues of all school districts in Washington by year, with the latest 2020-21 school year data.
Spending
$74 MM
$21,212 MM
This chart displays total spending of Mercer Island   School District and median value from total spendings of all school districts in Washington by year, with the latest 2020-21 school year data.
Revenue / Student
$20,484
$18,796
This chart displays average revenue per public school student in Mercer Island   School District and average revenue per public school student of all school districts in Washington by year, with the latest 2020-21 school year data.
Spending / Student
$18,521
$19,246
This chart displays average spending per public school student in Mercer Island   School District and average spending per public school student of all school districts in Washington by year, with the latest 2020-21 school year data.

Best Mercer Island School District Public Middle Schools (2025)

School
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
Islander Middle School
(Math: 76% | Reading: 80%)
Rank:
10/
10
Top 5%
8225 Se 72nd
Mercer Island, WA 98040
(206) 236-3413
Grades: 6-8
| 938 students

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Quick Stats (2025)

  • District size: 6 schools
  • Grades: 01-12
  • Enrollment: 3,975 students
  • Student:Teacher Ratio: 18:1
  • Minority Enrollment: 51%
  • : 92% (Top 10% in WA)
  • : Top 1%
  • : 80% (Top 1%)
  • : 85% (Top 1%)
  • : 81% (Top 1%)
  • Source: National Center for Education Statistics (NCES), WA Dept. of Education

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