Mercer Island Schools: A Quick Overview for New Families

The Mercer Island School District serves roughly 4,200 students across four elementary schools (Island Park, Lakeridge, West Mercer, Northwood), Islander Middle School, and Mercer Island High School.

Boundaries matter — they determine which elementary your kids attend, which directly affects neighborhood demand and home prices. If you're buying with school assignment in mind, ask me for the latest boundary map before you tour.

MIHS is consistently ranked among the top public high schools in Washington, with strong AP participation, a robust arts program, and competitive athletics across the KingCo conference.