#25 Best Private Middle Schools in King County, WA
Eton School
Montessori school · Grades Pre-K–8
The smallest classes of any Montessori school in Bellevue
Bellevue, WA
A+Overall grade227 students8 students per teacher
2026 lists
Best Private Middle Schools in King County, WA
Private schools in King County, WA with middle-school grades and the highest overall grades. Top 50 of 89 schools.
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.