#1 Largest Private Schools in Seattle, WA
King's Schools
Christian school (nondenominational) · Grades Pre-K–12
1,209 students
Seattle, WA
BOverall grade1,209 students14 students per teacher
2026 lists
Largest Private Schools in Seattle, WA
The private schools in Seattle, WA with the most students. Top 50 of 67 schools.
#2 Largest Private Schools in Seattle, WA
Seattle Academy
Independent school · Grades 6–12
1,170 students
Seattle, WA
A+Overall grade1,170 students8 students per teacher
#3 Largest Private Schools in Seattle, WA
Bishop Blanchet High School
Diocesan school · Grades 9–12
922 students
Seattle, WA
A-Overall grade922 students13 students per teacher
#4 Largest Private Schools in Seattle, WA
The Bush School
Independent school · Grades K–12
715 students
Seattle, WA
A+Overall grade715 students9 students per teacher
#5 Largest Private Schools in Seattle, WA
University Prep
Independent school · Grades 6–12
662 students
Seattle, WA
A+Overall grade662 students8 students per teacher
#6 Largest Private Schools in Seattle, WA
St. Joseph School
Parish school · Grades K–8
575 students
Seattle, WA
AOverall grade575 students14 students per teacher
#7 Largest Private Schools in Seattle, WA
St. Joseph School
Parish school · Grades K–8
575 students
Seattle, WA
B+Overall grade575 students14 students per teacher
#8 Largest Private Schools in Seattle, WA
Holy Names Academy
Independent Catholic school · Grades 9–12
571 students
Seattle, WA
BOverall gradeAll girls571 students16 students per teacher
#9 Largest Private Schools in Seattle, WA
St. John School
Parish school · Grades Pre-K–8
469 students
Seattle, WA
BOverall grade469 students20 students per teacher
#10 Largest Private Schools in Seattle, WA
Holy Rosary School
Diocesan school · Grades Pre-K–8
465 students
Seattle, WA
BOverall grade465 students16 students per teacher
#11 Largest Private Schools in Seattle, WA
O'Dea High School
Diocesan school · Grades 9–12
461 students
Seattle, WA
BOverall gradeAll boys461 students14 students per teacher
#12 Largest Private Schools in Seattle, WA
The Northwest School of the Arts
Independent school · Grades 6–12
429 students
Seattle, WA
A+Overall grade429 students8 students per teacher
#13 Largest Private Schools in Seattle, WA
Hamlin Robinson School
Special education school · Grades 1–8
389 students
Seattle, WA
B+Overall grade389 students7 students per teacher
#14 Largest Private Schools in Seattle, WA
Westside School
Independent school · Grades Pre-K–8
340 students
Seattle, WA
BOverall grade340 students12 students per teacher
#15 Largest Private Schools in Seattle, WA
Villa Academy
Independent Catholic school · Grades Pre-K–8
298 students
Seattle, WA
A+Overall grade298 students9 students per teacher
#16 Largest Private Schools in Seattle, WA
Our Lady of Fatima School
Parish school · Grades Pre-K–8
250 students
Seattle, WA
AOverall grade250 students13 students per teacher
#17 Largest Private Schools in Seattle, WA
St. George Parish School
Diocesan school · Grades Pre-K–8
240 students
Seattle, WA
AOverall grade240 students16 students per teacher
#18 Largest Private Schools in Seattle, WA
Epiphany School
Independent school · Grades Pre-K–5
232 students
Seattle, WA
A+Overall grade232 students7 students per teacher
#19 Largest Private Schools in Seattle, WA
St. Anne School
Diocesan school · Grades Pre-K–8
228 students
Seattle, WA
B+Overall grade228 students14 students per teacher
#20 Largest Private Schools in Seattle, WA
St. Catherine School
Diocesan school · Grades Pre-K–8
227 students
Seattle, WA
A-Overall grade227 students13 students per teacher
#21 Largest Private Schools in Seattle, WA
Bertschi School
Independent school · Grades Pre-K–5
226 students
Seattle, WA
B+Overall grade226 students10 students per teacher
#22 Largest Private Schools in Seattle, WA
Oneworld Now
Alternative school · Grades 8–12
203 students
Seattle, WA
B-Overall grade203 students
#23 Largest Private Schools in Seattle, WA
St. Therese Catholic Academy
Diocesan school · Grades K–8
198 students
Seattle, WA
A+Overall grade198 students8 students per teacher
#24 Largest Private Schools in Seattle, WA
Seattle Waldorf School
Independent school · Grades Pre-K–12
196 students
Seattle, WA
B+Overall grade196 students7 students per teacher
From official public records, updated October 2026.