Skip to main content
7.9 avg / 10

Best Schools in Mercer Island, Washington

13 schools · 8 Elementary · 1 Middle · 3 High · 1 Other

Public: 6
Private: 7
Districts: 1
Avg Rating: 7.9/10
Estimated Scores: 40%

Family Snapshot

At a glance
Avg school rating
7.9/10

70% of schools rated 7+

Median household income
$202,359

Census ACS, ZIPs in this city

Median home value
$1,884,200

Owner-occupied units

Bachelor's degree or higher
79%

Adults 25+

Avg commute
25 min

Workers age 16+

Owner-occupied homes
66%

Of occupied housing units

How Mercer Island compares

Washington rank

#4 of 192

cities by avg. school score

Vs. state average

+1.5

above Washington avg (6.3)

Median household income

$202k

227% of Washington median

Schools in this city

10

About Schools in Mercer Island, Washington

Mercer Island, Washington is home to 13 schools, including 6 public schools and 7 private schools. The city's schools span 8 elementary schools, 1 middle school, and 3 high schools.

With an average rating of 7.9 out of 10, schools in Mercer Island perform strongly on the MySchoolScout composite scale, which measures academic achievement, student growth, equity, and school environment.

The highest-performing school in Mercer Island is Island Park Elementary with a composite score of 9.2/10, demonstrating strong academic outcomes and school quality metrics.

Mercer Island is served by 1 school district: Mercer Island School District. These districts collectively serve 3,975 students.

Mercer Island's community shows 79% bachelor's degree attainment with a median household income of $202,359. The poverty rate in the area is 4.6%.

Browse the schools below to compare ratings, test scores, enrollment, and other key metrics. Use the filters to focus on specific school levels or types that match your family's needs.

Filter by ZIP: 98040 (13)

Elementary Schools

8 schools
# School Rating
1 361 students · Kindergarten–5th 9.2
2 398 students · Pre-K–5th 9.1
3 410 students · Kindergarten–5th 8.8
4 403 students · Kindergarten–5th 8.4
Private Schools 4 schools

Private and public school ratings use different data sources and scoring models. Scores are not directly comparable across school types.

1 342 students · Pre-K–8th Not Rated
2 216 students · Pre-K–8th Not Rated
3 10 students · Pre-K–Kindergarten Not Rated
4 7 students · Pre-K–TK Not Rated

Middle Schools

1 school
# School Rating
1 938 students · 6th–8th 6.5

High Schools

3 schools
# School Rating
1 1,465 students · 9th–12th 7.2
Private Schools 2 schools

Private and public school ratings use different data sources and scoring models. Scores are not directly comparable across school types.

1 52 students · 9th–12th Not Rated
2 2 students · 9th–12th Not Rated

Other Schools

1 school
# School Rating
1 115 students · 2nd–12th Not Rated

Schools in Mercer Island

Mercer Island, Washington · 13 schools

Community Demographics

Census ACS 2022 5-Year Estimates across 1 ZIP code

Median Income

$202,359

Median Home Value

$1,884,200

Median Rent

$2,464/mo

Population

25,282

College Educated

79%

Homeownership

66%

Avg Commute

25 min

Poverty Rate

4.6%

Community Profile

Mercer Island has a median household income of $202,359. It is a well-educated community where 79% of adults hold a bachelor's degree or higher. The median home value in the area is $1,884,200, with a median rent of $2,464/month. The local poverty rate of 4.6% is relatively low. The average commute for residents is 25 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.

Quick Facts

Total Schools
13
Elementary
8
Middle
1
High
3
Districts
1
Avg Rating
7.9/10

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

Frequently Asked Questions

Common questions about schools in Mercer Island, Washington

How many schools are in Mercer Island, Washington?

Mercer Island has 13 schools, including 6 public and 7 private schools spanning elementary, middle, and high school levels.

What is the average school rating in Mercer Island, Washington?

The average MySchoolScout composite score for schools in Mercer Island is 7.9 out of 10, based on academic achievement, student growth, equity, and school environment.

What is the top-ranked school in Mercer Island, Washington?

The top-ranked school in Mercer Island on MySchoolScout is Island Park Elementary with a composite score of 9.2/10.

What is the best elementary school in Mercer Island, Washington?

The top-ranked elementary school in Mercer Island on MySchoolScout is Island Park Elementary with a composite score of 9.2/10.

What is the best middle school in Mercer Island, Washington?

The top-ranked middle school in Mercer Island on MySchoolScout is Islander Middle School with a composite score of 6.5/10.

What is the best high school in Mercer Island, Washington?

The top-ranked high school in Mercer Island on MySchoolScout is Mercer Island High School with a composite score of 7.2/10.

How many school districts serve Mercer Island, Washington?

Mercer Island is served by 1 school district: Mercer Island School District.

What is the education level in Mercer Island, Washington?

According to Census data, 79% of adults in Mercer Island have earned a bachelor's degree or higher.

What is the median income in Mercer Island, Washington?

The median household income in Mercer Island is approximately $202,359 according to Census ACS 2022 estimates.

Are there private schools in Mercer Island, Washington?

Yes, Mercer Island has 7 private schools alongside 6 public schools. The top-rated private school is Yellow Wood Academy with a score of 8.2/10.

What is the student-teacher ratio in Mercer Island, Washington?

The average student-teacher ratio across schools in Mercer Island is 10.6:1. This ratio varies by school, so families should check individual school profiles for specific classroom sizes.

How does MySchoolScout rate schools in Mercer Island, Washington?

MySchoolScout rates schools using publicly available data from the NCES Common Core of Data and state education departments. Each school receives a 1-10 composite score based on four components: Academic Achievement, Student Growth, Equity, and School Environment.

Related reading

Get school insights in your inbox

New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.

We respect your privacy. Unsubscribe at any time.

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.