#1 Best Private High Schools in King County, WA
Forest Ridge School of the Sacred Heart
Independent Catholic school · Grades 5–12
The only all-girls school in Bellevue
Bellevue, WA
A+Overall gradeAll girls245 students7 students per teacher
2026 lists
Best Private High Schools in King County, WA
Private high schools in King County, WA with the highest overall grades. Top 24 of 24 schools.
#2 Best Private High Schools in King County, WA
The Northwest School of the Arts
Independent school · Grades 6–12
99% of graduates go to four-year colleges
Seattle, WA
A+Overall grade429 students8 students per teacher
#3 Best Private High Schools in King County, WA
Rainier Christian School District
Christian school (nondenominational) · Grades Pre-K–12
The smallest classes of any Christian school in Auburn
Auburn, WA
A+Overall grade274 students8 students per teacher
#4 Best Private High Schools in King County, WA
The Bear Creek School
Christian school (nondenominational) · Grades Pre-K–12
The only Christian school in Redmond
Redmond, WA
A+Overall grade673 students8 students per teacher
#5 Best Private High Schools in King County, WA
The Bush School
Independent school · Grades K–12
One of the 3 largest independent schools in Washington
Seattle, WA
A+Overall grade715 students9 students per teacher
#6 Best Private High Schools in King County, WA
University Prep
Independent school · Grades 6–12
One of the 3 largest independent schools in Washington
Seattle, WA
A+Overall grade662 students8 students per teacher
#7 Best Private High Schools in King County, WA
Eastside Preparatory School
Independent school · Grades 5–12
100% of graduates go to four-year colleges
Kirkland, WA
A+Overall grade536 students9 students per teacher
#8 Best Private High Schools in King County, WA
Seattle Academy
Independent school · Grades 6–12
The largest of 121 independent schools in Washington
Seattle, WA
A+Overall grade1,170 students8 students per teacher
#9 Best Private High Schools in King County, WA
Seattle Waldorf School
Independent school · Grades Pre-K–12
86% of graduates go to four-year colleges
Seattle, WA
A+Overall grade193 students6 students per teacher
#10 Best Private High Schools in King County, WA
John F Kennedy Catholic High School
Diocesan school · Grades 9–12
The smallest classes of any Catholic school in Burien
Burien, WA
AOverall grade815 students13 students per teacher
#11 Best Private High Schools in King County, WA
Yellow Wood Academy
Alternative school · Grades 4–12
Smaller classes than 92% of independent schools in Washington
Mercer Island, WA
AOverall grade101 students2 students per teacher
#12 Best Private High Schools in King County, WA
King's School
Christian school (nondenominational) · Grades Pre-K–12
One of the 3 largest Christian schools in Washington
Shoreline, WA
A-Overall grade1,209 students14 students per teacher
#13 Best Private High Schools in King County, WA
Bishop Blanchet High School
Diocesan school · Grades 9–12
The largest of 89 Catholic schools in Washington
Seattle, WA
A-Overall grade922 students13 students per teacher
#14 Best Private High Schools in King County, WA
Providence Classical Christian School
Calvinist school · Grades Pre-K–12
The largest Christian school in Bothell
Bothell, WA
A-Overall grade350 students13 students per teacher
#15 Best Private High Schools in King County, WA
Chrysalis High School
Alternative school · Grades 6–12
The largest independent school in Woodinville
Woodinville, WA
A-Overall grade155 students3 students per teacher
#16 Best Private High Schools in King County, WA
Seattle Waldorf School
Independent school · Grades Pre-K–12
86% of graduates go to four-year colleges
Seattle, WA
B+Overall grade196 students7 students per teacher
#17 Best Private High Schools in King County, WA
Seattle Christian Schools
Christian school (nondenominational) · Grades K–12
One of 2 Christian schools in SeaTac
SeaTac, WA
BOverall grade606 students13 students per teacher
#18 Best Private High Schools in King County, WA
O'Dea High School
Diocesan school · Grades 9–12
87% of graduates go to four-year colleges
Seattle, WA
BOverall gradeAll boys461 students14 students per teacher
#19 Best Private High Schools in King County, WA
Holy Names Academy
Independent Catholic school · Grades 9–12
99% of graduates go to four-year colleges
Seattle, WA
BOverall gradeAll girls571 students16 students per teacher
#20 Best Private High Schools in King County, WA
Auburn Adventist Academy
Seventh-day Adventist school · Grades 9–12
One of 6 Christian schools in Auburn
Auburn, WA
BOverall grade261 students14 students per teacher
#21 Best Private High Schools in King County, WA
King's Schools
Christian school (nondenominational) · Grades Pre-K–12
One of the 3 largest Christian schools in Washington
Seattle, WA
BOverall grade1,209 students14 students per teacher
#22 Best Private High Schools in King County, WA
The Downtown School, a Lakeside School
Independent school · Grades 9–12
93% of graduates go to four-year colleges
Seattle, WA
BOverall grade142 students17 students per teacher
#23 Best Private High Schools in King County, WA
Oneworld Now
Alternative school · Grades 8–12
One of the most diverse private schools in Washington
Seattle, WA
B-Overall grade203 students
#24 Best Private High Schools in King County, WA
Puget Sound Adventist Academy
Seventh-day Adventist school · Grades K–12
The only Christian school in Kirkland
Kirkland, WA
B-Overall grade187 students12 students per teacher
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.