Northwood Elementary School

Northwood Elementary School is a middle-of-the-pack elementary campus in Mercer Island, Washington, operated by Mercer Island School District. The school hosts 398 students in grades pre-K through 5.

Mercer Island School District runs 6 schools in total, collectively educating 3,993 students. Northwood Elementary School is one of those campuses.

On demographics, Northwood Elementary School records that the largest single group is White at 46%, but no single group is in the majority. The remainder consists of 29% Asian, 13% multiracial, 10% Hispanic. The wider county runs roughly 55% White, putting the school's mix noticeably less White than the area baseline.

Looking at the economic backdrop, Northwood Elementary School lists 26 full-time-equivalent teachers, putting the student-to-teacher ratio at about 15.0:1. The state averages around 17.3:1, so this campus is tighter than the state norm typical. Roughly 10% of students at Northwood Elementary School qualify for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. That share is below King County's rate of about 38%.

On a demographically-adjusted basis, Northwood Elementary School sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 73.3%; this one delivers 79.0%.

Across the wider county, census data for King County shows median household income runs about $124,746, 57% of adults hold a bachelor's degree or higher, and roughly 5% of residents live below the federal poverty line. In all, King County runs 544 public schools (combined enrollment of about 278,492 students), of which Northwood Elementary School is one.

Nearest neighbor: Mercer Island High School, around 0.2 miles off. 8 of the 8 nearest public schools sit inside a five-mile radius. Ranking that nearby cluster on reported proficiency puts Northwood Elementary School at 3rd of 9; the average score across the group is 75.4%.

Northwood Elementary School operates from an outer-ring location.

Looking at the recent track record. Looking back 7 years, enrollment at Northwood Elementary School has shrank 14%, going from 465 students in 2018 to 398 in 2025. Over the same period, the White share decreased from 54% to 46%.

On this page, recent activity here tends to focus on school events, parent volunteer needs, and clubs. Members of the school community can share what they know.