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For the 2026 school year, there is 1 public preschool serving 398 students in Mercer Island, WA. The top-ranked public preschool in Mercer Island, WA is Northwood Elementary School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Mercer Island, WA public preschool have an average math proficiency score of 72% (versus the Washington public pre school average of 45%), and reading proficiency score of 77% (versus the 49% statewide average). Pre schools in Mercer Island have an average ranking of 10/10, which is in the top 5% of Washington public pre schools.

Minority enrollment is 59% of the student body (majority Asian), which is more than the Washington public preschool average of 54% (majority Hispanic).