#25 Largest Private Schools in King County, WA
St. Anthony Elementary School
Diocesan school · Grades Pre-K–8
350 students
Renton, WA
B+Overall grade350 students18 students per teacher
2026 lists
Largest Private Schools in King County, WA
The private schools in King County, WA with the most students. Top 50 of 173 schools.
From official public records, updated October 2026.