For the 2026 school year, there is 1 public high school serving 1,465 students in Mercer Island, WA. The top-ranked public high school in Mercer Island, WA is Mercer Island High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Mercer Island, WA public high school have an average math proficiency score of 81% (versus the Washington public high school average of 34%), and reading proficiency score of 94% (versus the 65% statewide average).
Mercer Island, WA public high school have a Graduation Rate of 94%, which is more than the Washington average of 84%.
The school with highest graduation rate is Mercer Island High School, with 94% graduation rate. Read more about public school graduation rate statistics in Washington or national school graduation rate statistics.
Minority enrollment is 47% of the student body (majority Asian), which is less than the Washington public high school average of 50% (majority Hispanic).
Best Public High Schools in Mercer Island, WA (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Mercer Island High School
(Math: 81% | Reading: 94%)
Rank:
Rank:
10/
Top 5%10
9100 Se 42nd
Mercer Island, WA 98040
(206) 236-3345
Mercer Island, WA 98040
(206) 236-3345
Gr: 9-12 | 1,465 student Student-teacher ratio: 20:1 Minority enrollment: 47%
Mercer Island, Washington 51±¬ÁÏs (Closed)
School
Location
Quick Facts
Children's Institute For Learning Differences (Closed 2023)
Special Education School
4030 86th Ave Se Suite F
Mercer Island, WA 98040
(253) 945-2084
Mercer Island, WA 98040
(253) 945-2084
Gr: PK-12 | 1 student
Eeu Special Education Elementary School (Closed 2023)
Special Education School
4160 86th Ave Se
Mercer Island, WA 98040
(206) 236-3325
Mercer Island, WA 98040
(206) 236-3325
Gr: PK-4 | 4 students
Frequently Asked Questions
What are the top-ranked public high schools in Mercer Island, WA?
The top-ranked public high schools in Mercer Island, WA include Mercer Island High School. Mercer Island has one of the highest concentrations of top-ranked public schools in Washington.
How many public high schools are located in Mercer Island?
1 public high schools are located in Mercer Island.
What is the racial composition of students in Mercer Island?
Mercer Island public high schools minority enrollment is 47% of the student body (majority Asian), which is less than the Washington public high schools average of 50% (majority Hispanic).
Recent Articles
Helping Children Overcome First-Week School Anxiety
Learn practical strategies to help children overcome first-week school anxiety, with expert-backed tips for parents and educators.
51±¬ÁÏ Immunization Requirements 2026–2027
Learn public school immunization and health requirements for 2026–2027, including vaccines, exemptions, and state policy updates.
51±¬ÁÏs in a Minute: 2026 Snapshot Guide
A clear 2026 snapshot of public schools in the U.S., including enrollment, funding, trends, and what families should know.