#1 Fastest-Growing Private Schools in Washington
Cedar Crest Academy Bellewood
Independent school · Grades Pre-K–5
Enrollment up 352% in about a decade
Bellevue, WA
B-Overall grade190 students13 students per teacher
2026 lists
Fastest-Growing Private Schools in Washington
Private schools in Washington whose enrollment has grown the most over the past decade. Top 50 of 120 schools.
#2 Fastest-Growing Private Schools in Washington
Overcomer Academy
Christian school (nondenominational) · Grades Pre-K–8
Enrollment up 341% in about a decade
Auburn, WA
B-Overall grade194 students16 students per teacher
#3 Fastest-Growing Private Schools in Washington
Bellevue Montessori School
Montessori school · Grades 1–6
Enrollment up 332% in about a decade
Bellevue, WA
BOverall grade255 students15 students per teacher
#4 Fastest-Growing Private Schools in Washington
Gateway Christian Schools
Christian school (nondenominational) · Grades K–12
Enrollment up 197% in about a decade
Poulsbo, WA
B+Overall grade368 students11 students per teacher
#5 Fastest-Growing Private Schools in Washington
St. Matthew Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Enrollment up 186% in about a decade
Spokane, WA
BOverall grade120 students16 students per teacher
#6 Fastest-Growing Private Schools in Washington
Pullman Christian School
Christian school (nondenominational) · Grades K–12
Enrollment up 185% in about a decade
Pullman, WA
AOverall grade148 students11 students per teacher
#7 Fastest-Growing Private Schools in Washington
Yellow Wood Academy
Alternative school · Grades 4–12
Enrollment up 166% in about a decade
Mercer Island, WA
AOverall grade101 students2 students per teacher
#8 Fastest-Growing Private Schools in Washington
Hamlin Robinson School
Special education school · Grades 1–8
Enrollment up 158% in about a decade
Seattle, WA
B+Overall grade389 students7 students per teacher
#9 Fastest-Growing Private Schools in Washington
Valley Christian School
Christian school (nondenominational) · Grades K–12
Enrollment up 153% in about a decade
Spokane Valley, WA
BOverall grade494 students13 students per teacher
#10 Fastest-Growing Private Schools in Washington
Pope John Paul II High School
Diocesan school · Grades 9–12
Enrollment up 143% in about a decade
Lacey, WA
A+Overall grade102 students10 students per teacher
#11 Fastest-Growing Private Schools in Washington
Seton Catholic College Preparatory High School
Diocesan school · Grades 9–12
Enrollment up 127% in about a decade
Vancouver, WA
B+Overall grade268 students14 students per teacher
#12 Fastest-Growing Private Schools in Washington
Eastside Preparatory School
Independent school · Grades 5–12
Enrollment up 123% in about a decade
Kirkland, WA
A+Overall grade536 students9 students per teacher
#13 Fastest-Growing Private Schools in Washington
Zion Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Enrollment up 118% in about a decade
Lake Stevens, WA
BOverall grade257 students14 students per teacher
#14 Fastest-Growing Private Schools in Washington
Providence Classical Christian School
Calvinist school · Grades Pre-K–12
Enrollment up 116% in about a decade
Bothell, WA
A-Overall grade350 students13 students per teacher
#15 Fastest-Growing Private Schools in Washington
Perkins School
Independent school · Grades K–5
Enrollment up 111% in about a decade
Seattle, WA
A+Overall grade129 students8 students per teacher
#16 Fastest-Growing Private Schools in Washington
Burley Christian School
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 110% in about a decade
Port Orchard, WA
B-Overall grade212 students15 students per teacher
#17 Fastest-Growing Private Schools in Washington
St. Michael Catholic School
Diocesan school · Grades Pre-K–8
Enrollment up 110% in about a decade
Snohomish, WA
A+Overall grade126 students13 students per teacher
#18 Fastest-Growing Private Schools in Washington
Mount Vernon Christian School
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 109% in about a decade
Mount Vernon, WA
B-Overall grade589 students14 students per teacher
#19 Fastest-Growing Private Schools in Washington
Monroe Christian School
Calvinist school · Grades Pre-K–8
Enrollment up 104% in about a decade
Monroe, WA
BOverall grade255 students16 students per teacher
#20 Fastest-Growing Private Schools in Washington
Annie Wright Schools
Episcopal school · Grades Pre-K–12
Enrollment up 86% in about a decade
Tacoma, WA
A+Overall grade748 students10 students per teacher
#21 Fastest-Growing Private Schools in Washington
Christ the King Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Enrollment up 84% in about a decade
Bremerton, WA
B+Overall grade90 students14 students per teacher
#22 Fastest-Growing Private Schools in Washington
Kapka Cooperative School
Independent school · Grades K–5
Enrollment up 83% in about a decade
Seattle, WA
AOverall grade66 students8 students per teacher
#23 Fastest-Growing Private Schools in Washington
Eagle View Christian School
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 82% in about a decade
Yelm, WA
BOverall grade171 students14 students per teacher
#24 Fastest-Growing Private Schools in Washington
Seattle Academy
Independent school · Grades 6–12
Enrollment up 80% in about a decade
Seattle, WA
A+Overall grade1,170 students8 students per teacher
From official public records, updated October 2026.