District guide
Mercer Island School District public schools
Parent-focused district context for King County, WA: school list, grade pathway, enrollment scale, profile links, and the local checks to make before using the district in a housing decision.
Direct answer for parents
What Mercer Island School District tells you before choosing a home
Mercer Island School District is listed with 6 public schools and 4,057 reported students in the current NCES file. Treat this as a district-level research page: it helps you understand scale, grade coverage, and school records, but it does not confirm the school assigned to a specific address.
The current district file lists 4 primary, 1 middle, 1 high schools. Verify transition grades, feeder patterns, transfer policies, and program eligibility with the district.
6 district schools are associated with King County in the current file, about 1% of listed county schools. Confirm address-level assignment locally.
Grade pathway
District school mix by level
Use this section to separate elementary, middle, high, and other school records before comparing commute, programs, and assignment rules.
4
1,603 reported students
1
930 reported students
1
1,524 reported students
Parent checks for Mercer Island School District
These are the local questions that matter after the public data narrows the field.
Confirm the assigned school
Use official attendance-zone or address lookup tools before assuming a school serves a home.
Check transition grades
Elementary choices can split into different middle or high school paths, especially in large districts.
Verify choice-program rules
Charter, magnet, virtual, and transfer options can require applications, lotteries, or eligibility checks.
Compare similar schools
Compare schools at the same level before treating enrollment, grade span, or school type as a quality signal.
School records
Largest listed schools in Mercer Island School District
Sorted by reported enrollment. Profile links appear where SchoolsByCounty has generated an individual school page; listed-only records still preserve NCES grade, type, city, and enrollment fields.
| School | Level | Grades | City | Enrollment | Profile |
|---|---|---|---|---|---|
| Mercer Island High School Regular | High | 9–12 | Mercer Island | 1,524 | Profile |
| Islander Middle School Regular | Middle | 6–8 | Mercer Island | 930 | Listed only |
| West Mercer Elementary Regular | Primary | KG–5 | Mercer Island | 422 | Listed only |
| Northwood Elementary School Regular | Primary | PK–5 | Mercer Island | 404 | Listed only |
| Lakeridge Elementary School Regular | Primary | KG–5 | Mercer Island | 397 | Listed only |
| Island Park Elementary Regular | Primary | KG–5 | Mercer Island | 380 | Listed only |
Communities in the district file
NCES city fields are directory fields, not attendance boundaries. Use them to orient the district footprint, then verify the exact home-to-school assignment.
County coverage
Some districts can include records associated with more than one county. The route is anchored to the district's primary county record in the current data.
Mercer Island School District FAQ
What schools are included for Mercer Island School District?
Mercer Island School District includes 6 public schools in the current NCES district file. The current district file lists 4 primary, 1 middle, 1 high schools.
Does this Mercer Island School District page show exact attendance zones?
No. SchoolsByCounty publishes district and school records from public data. Attendance boundaries, transportation, transfers, magnet eligibility, and charter rules must be confirmed with Mercer Island School District or local assignment tools.
Is Mercer Island School District ranked as the best district in King County?
No. This is a district guide, not a recommendation or ranking. Use it to understand the district's listed schools, grade spans, enrollment scale, and available school profiles before verifying local fit.
How many Mercer Island School District schools have detailed profiles?
1 school in this district currently link to detailed SchoolsByCounty profiles. Other schools remain listed with NCES directory fields.
Data Sources
Education data sourced from the National Center for Education Statistics (NCES) Common Core of Data and School District Finance Survey. School scores are derived composite metrics based on available NCES graduation-rate and school-finance signals.
Data is informational only. Coverage varies by county and reporting year. Not for use as the sole basis for educational decisions.