#1 Best Private 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 Schools in King County, WA
Private schools in King County, WA with the highest overall grades. Top 50 of 121 schools.
#2 Best Private Schools in King County, WA
St. Therese Catholic Academy
Diocesan school · Grades K–8
Smaller classes than 93% of Catholic schools in Washington
Seattle, WA
A+Overall grade198 students8 students per teacher
#3 Best Private Schools in King County, WA
St. Madeleine Sophie Catholic School
Diocesan school · Grades Pre-K–8
Smaller classes than 86% of Catholic schools in Washington
Bellevue, WA
A+Overall grade144 students9 students per teacher
#4 Best Private Schools in King County, WA
Heritage Christian Academy
Baptist school · Grades Pre-K–10
Smaller classes than 89% of Christian schools in Washington
Bothell, WA
A+Overall grade253 students8 students per teacher
#5 Best Private Schools in King County, WA
Villa Academy
Independent Catholic school · Grades Pre-K–8
Smaller classes than 82% of Catholic schools in Washington
Seattle, WA
A+Overall grade298 students9 students per teacher
#6 Best Private Schools in King County, WA
Evergreen Academy
Independent school · Grades Pre-K–5
The smallest classes of any independent school in Bothell
Bothell, WA
A+Overall grade171 students5 students per teacher
#7 Best Private Schools in King County, WA
St. Joseph School-- Issaquah and Snoqualmie
Diocesan school · Grades Pre-K–7
The only Catholic school in Issaquah
Issaquah, WA
A+Overall grade165 students6 students per teacher
#8 Best Private Schools in King County, WA
Holy Family Catholic School
Diocesan school · Grades Pre-K–8
The only Catholic school in Auburn
Auburn, WA
A+Overall grade173 students12 students per teacher
#9 Best Private Schools in King County, WA
Shoreline Christian School
Christian school (nondenominational) · Grades Pre-K–12
Smaller classes than 86% of Christian schools in Washington
Shoreline, WA
A+Overall grade224 students8 students per teacher
#10 Best Private Schools in King County, WA
Renton Prep Christian School
Lutheran (Missouri Synod) school · Grades Pre-K–10
The smallest classes of any Christian school in Renton
Renton, WA
A+Overall grade165 students8 students per teacher
#11 Best Private 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
#12 Best Private Schools in King County, WA
Eastside Christian School
Christian school (nondenominational) · Grades Pre-K–8
Smaller classes than 66% of Christian schools in Washington
Bellevue, WA
A+Overall grade239 students10 students per teacher
#13 Best Private Schools in King County, WA
Northlake Academy
Independent school · Grades Pre-K–5
Smaller classes than 93% of independent schools in Washington
Kirkland, WA
A+Overall grade108 students4 students per teacher
#14 Best Private 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
#15 Best Private 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
#16 Best Private Schools in King County, WA
Woodinville Montessori School
Montessori school · Grades Pre-K–12
The largest of 37 Montessori schools in Washington
Bothell, WA
A+Overall grade312 students7 students per teacher
#17 Best Private Schools in King County, WA
Epiphany School
Independent school · Grades Pre-K–5
Smaller classes than 61% of independent schools in Washington
Seattle, WA
A+Overall grade232 students7 students per teacher
#18 Best Private 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
#19 Best Private Schools in King County, WA
Medina Academy
Islamic school · Grades Pre-K–8
Growing: enrollment up 78% since 2011–12
Bellevue, WA
A+Overall grade229 students11 students per teacher
#20 Best Private Schools in King County, WA
French American School of Puget Sound
Independent school · Grades Pre-K–8
The largest independent school in Mercer Island
Mercer Island, WA
A+Overall grade312 students5 students per teacher
#21 Best Private 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
#22 Best Private Schools in King County, WA
St. Benedict School
Diocesan school · Grades Pre-K–8
Serving families in Seattle since at least 2011
Seattle, WA
A+Overall grade186 students12 students per teacher
#23 Best Private Schools in King County, WA
St. Vincent De Paul School
Parish school · Grades Pre-K–8
One of the most diverse private schools in Washington
Federal Way, WA
A+Overall grade232 students14 students per teacher
#24 Best Private Schools in King County, WA
Summit Classical Christian School
Christian school (nondenominational) · Grades K–12
Smaller classes than 90% of Christian schools in Washington
Bellevue, WA
A+Overall grade275 students7 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.