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8.2 avg / 10

Mercer Island School District

School District · Mercer Island, Washington

Students: 3,975
Teachers (FTE): 217

Avg Rating

8.2

out of 10

Schools

6

4 elem, 1 mid, 1 high

Per-Pupil Spending

$17,288

Student-Teacher Ratio

18.3:1

How this district compares

Washington rank

#3 of 233

districts by avg. composite

Vs. state average

+1.9

above Washington avg

Per-pupil spending

$17,288

$436 vs Washington median

District size

3,975 students

Much larger than Washington median

About Mercer Island School District

Mercer Island School District is a Mercer Island, Washington school district serving 6 schools. The district educates 3,975 students with a student-teacher ratio of 18.3:1. The district invests $17,288 per student annually.

With an average rating of 8.2/10, Mercer Island School District is among the strongest-performing districts in the state.

The highest-rated school in the district is Island Park Elementary, which has a composite score of 9.2/10.

In standardized testing, Mercer Island School District students show an average math proficiency of 81.5% and ELA proficiency of 85.7%.

The district includes 4 elementary schools , 1 middle school , and 1 high school.

District Map

Schools in Mercer Island School District, colored by MySchoolScout rank. Click a pin for details.

District Average Test Scores

Math Proficiency 81.5%
School
State
N/A
ELA Proficiency 85.7%
School
State
N/A

Average proficiency across all schools in Mercer Island School District with test data.

District Details

State
Washington
City
Mercer Island
Total Enrollment
3,975
Teachers (FTE)
217
Child Poverty Rate
0.0%
Data Year
2023

Frequently Asked Questions

How many schools are in Mercer Island School District?

Mercer Island School District has 6 schools in total — 4 elementary, 1 middle, and 1 high schools. You can explore each school's ratings and details on this page.

What is the average rating for Mercer Island School District?

The average composite rating for Mercer Island School District is 8.2/10. This score is calculated from the individual ratings of all schools with academic data in the district.

What is the per-pupil spending in Mercer Island School District?

Mercer Island School District spends $17,288 per student per year.

What is the student-teacher ratio in Mercer Island School District?

The average student-teacher ratio in Mercer Island School District is 18.3:1.

What is the top-rated school in Mercer Island School District?

Island Park Elementary is the highest-rated school in Mercer Island School District with a composite score of 9.2/10.

What are the test scores in Mercer Island School District?

Across schools in Mercer Island School District with test data, the average math proficiency is 81.5% and the average ELA (reading/writing) proficiency is 85.7%. These figures represent the percentage of students meeting or exceeding grade-level standards.

How does Mercer Island School District compare to other districts in Washington?

Mercer Island School District has an average school rating of 8.2/10 across 6 schools. Families can compare this to other districts in Washington by visiting individual district pages. Factors like school size, available programs, and community demographics also play a role in choosing the right fit.

How does MySchoolScout rate schools?

MySchoolScout ratings are based on a comprehensive methodology that weighs Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Learn more about our rating system on our methodology page.

District Averages

Overall Rating
8.2/10
Math Proficiency
81.5%
ELA Proficiency
85.7%

Resources

🔍 Search for District Website 📄 Official NCES Data 🏫 GreatSchools Profile 📍 View on Google Maps

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

Other School Districts in WA

Compare Mercer Island School District with neighboring districts in the state.

See all districts in WA →

Data from NCES Common Core of Data, Washington Dept. of Education, and U.S. Census ACS for the 2023–24 school year. Rankings computed by MySchoolScout. See all data sources.

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