Mercer Island High School
PublicHighGrades 9–12
9100 SE 42nd, Mercer Island, WA 98040 · (206) 236-3345 · Part of Mercer Island School District
Mercer Island’s School Grade A+ better than 100% of Washington school districts
Students
1,439
Students per teacher
19:1
Free or reduced lunch
7%
Setting
Suburb
Grades
9–12
What stands out about Mercer Island High School
- No state test results published for this school
On the path
Where Mercer Island kids come from and go next. The whole path →
6–8Islander Middle School960 students
9–12Mercer Island High SchoolYou are here
Location
Directions ↗
9100 SE 42nd, Mercer Island
Students
Enrollment by grade
Grade 9352
Grade 10350
Grade 11361
Grade 12376
Enrollment over time
1,551’20
1,544’21
1,524’22
1,465’23
1,439’24
Down 7.2% since 2020–21.
Who goes here
White 52%Asian 25%Two or more races 13%Hispanic 7%Black 1%Native Hawaiian/Pacific Islander <1%American Indian/Alaska Native <1%
As reported to NCES, share of students with a reported race or ethnicity.
Parents talk
Questions and answers about Mercer Island High School from Mercer Island families.
Other schools in Mercer Island School District
School facts: U.S. Department of Education (NCES), 2024–2025 school year. Map: © OpenStreetMap contributors.