Islander Middle School

8225 SE 72nd, Mercer Island, WA 98040

ASchola Grade
Grades
6–8
Middle
Students
960
Enrolled 2024–25
Students per teacher
21.3 : 1
Full-time teachers
District
Mercer Island School District
King County

Schola Grade A · Excellent

Letter grade (A–F) · compared with 368 Washington middle schools · How we grade
Test scores78% proficient in math & reading
99thpercentile
Equity60% of low-income students proficient
99thpercentile
Attendance5% chronically absent
99thpercentile
Class size21.3 students per teacher
17thpercentile

Percentiles compare this school with other Washington middle 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 Islander Middle School

Islander Middle School is a public middle school in Mercer Island, Washington, serving grades 6–8. 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, 960 students were enrolled, with about 21.3 students for every full-time teacher. That ratio is larger than the typical Washington middle school (19.1 students per teacher). Its Schola Grade is A (excellent), compared with 368 Washington middle schools.

Grades & enrollment

Students per grade, 2024–25Grades 6–8

Location & nearby schools

8225 SE 72nd
Mercer Island, WA 98040
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School details

Type
Public School · What this means
Level
Middle
Grades offered
6–8
Enrollment (2024–25)
960 students
Students per teacher
21.3 to 1
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
530498000764

Schools near Islander Middle 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.