Mercer Island High School
9100 SE 42nd, Mercer Island, WA 98040
Schola Grade A · Excellent
Percentiles compare this school with other Washington high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).
About Mercer Island High School
Mercer Island High School is a public high school in Mercer Island, Washington, serving grades 9–12. It is part of Mercer Island School District. The school is located in a large suburb in King County.
In the 2024–25 school year, 1,439 students were enrolled, with about 18.8 students for every full-time teacher. That ratio is close to the typical Washington high school (19.2 students per teacher). Its Schola Grade is A (excellent), compared with 338 Washington high schools.
Grades & enrollment
Location & nearby schools
School details
- Type
- Public School · What this means
- Level
- High
- Grades offered
- 9–12
- Enrollment (2024–25)
- 1,439 students
- Students per teacher
- 18.8 to 1
- AP courses offered
- 36
- Charter school
- No
- Magnet school
- No
- Virtual learning
- Offers virtual courses
- Locale
- Suburb — Large
- School district
- Mercer Island School District
- County
- King County
- NCES school ID
- 530498000761
Schools near Mercer Island High School
All 13 schools in Mercer Island →School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.