#1 Largest Private Schools in Clackamas County, OR
La Salle Catholic College Preparatory
Independent Catholic school · Grades 9–12
659 students
Milwaukie, OR
B-Overall grade659 students17 students per teacher
2026 lists
Largest Private Schools in Clackamas County, OR
The private schools in Clackamas County, OR with the most students. Top 23 of 23 schools.
#2 Largest Private Schools in Clackamas County, OR
Grand View Christian Academy
Baptist school · Grades Pre-K–12
412 students
Beavercreek, OR
B-Overall grade412 students16 students per teacher
#3 Largest Private Schools in Clackamas County, OR
Country Christian School
Christian school (nondenominational) · Grades Pre-K–12
411 students
Molalla, OR
B-Overall grade411 students15 students per teacher
#4 Largest Private Schools in Clackamas County, OR
Damascus Christian School
Christian school (nondenominational) · Grades Pre-K–12
344 students
Damascus, OR
B-Overall grade344 students14 students per teacher
#5 Largest Private Schools in Clackamas County, OR
North Clackamas Christian School
Christian school (nondenominational) · Grades Pre-K–12
302 students
Oregon City, OR
BOverall grade302 students15 students per teacher
#6 Largest Private Schools in Clackamas County, OR
Portland Waldorf School
Independent school · Grades Pre-K–12
296 students
Milwaukie, OR
AOverall grade296 students10 students per teacher
#7 Largest Private Schools in Clackamas County, OR
Our Lady of the Lake Cartholic School
Diocesan school · Grades Pre-K–8
256 students
Lake Oswego, OR
B-Overall grade256 students28 students per teacher
#8 Largest Private Schools in Clackamas County, OR
Good Shepherd School
Christian school (nondenominational) · Grades Pre-K–8
222 students
Boring, OR
B-Overall grade222 students16 students per teacher
#9 Largest Private Schools in Clackamas County, OR
Arbor School of Arts & Sciences
Independent school · Grades K–8
193 students
Tualatin, OR
AOverall grade193 students6 students per teacher
#10 Largest Private Schools in Clackamas County, OR
Hood View Adventist School
Seventh-day Adventist school · Grades Pre-K–8
188 students
Boring, OR
BOverall grade188 students15 students per teacher
#11 Largest Private Schools in Clackamas County, OR
Spring Mountain Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
186 students
Clackamas, OR
A-Overall grade186 students10 students per teacher
#12 Largest Private Schools in Clackamas County, OR
St. John the Baptist Catholic School
Diocesan school · Grades Pre-K–8
146 students
Milwaukie, OR
A+Overall grade146 students9 students per teacher
#13 Largest Private Schools in Clackamas County, OR
Rivergate Adventist Elementary School
Seventh-day Adventist school · Grades Pre-K–8
116 students
Gladstone, OR
B-Overall grade116 students18 students per teacher
#14 Largest Private Schools in Clackamas County, OR
Strike School
Alternative school · Grades K–12
113 students
Oregon City, OR
BOverall grade113 students18 students per teacher
#15 Largest Private Schools in Clackamas County, OR
The Marylhurst School
Alternative school · Grades Pre-K–8
105 students
Oregon City, OR
BOverall grade105 students13 students per teacher
#16 Largest Private Schools in Clackamas County, OR
Park Academy
Special education school · Grades 3–12
99 students
Lake Oswego, OR
A+Overall grade99 students4 students per teacher
#17 Largest Private Schools in Clackamas County, OR
Victory Academy
Special education school · Ungraded
75 students
Sherwood, OR
A+Overall grade75 students4 students per teacher
#18 Largest Private Schools in Clackamas County, OR
International Leadership Academy
Independent school · Grades Pre-K–5
69 students
Lake Oswego, OR
B+Overall grade69 students11 students per teacher
#19 Largest Private Schools in Clackamas County, OR
Micha-El School
Independent school · Grades K–7
66 students
Milwaukie, OR
A-Overall grade66 students7 students per teacher
#20 Largest Private Schools in Clackamas County, OR
Resurrection Catholic Parish School
Parish school · Grades Pre-K–5
66 students
Tualatin, OR
B+Overall grade66 students14 students per teacher
#21 Largest Private Schools in Clackamas County, OR
Wy East Mountain Academy
Independent school · Grades 8–12
64 students
Welches, OR
BOverall grade64 students32 students per teacher
#22 Largest Private Schools in Clackamas County, OR
Maayan Torah Day School
Jewish day school · Grades K–10
63 students
Lake Oswego, OR
B+Overall grade63 students5 students per teacher
#23 Largest Private Schools in Clackamas County, OR
Maayan Torah Day School
Jewish day school · Grades Pre-K–10
62 students
Lake Oswego, OR
B+Overall grade62 students6 students per teacher
From official public records, updated October 2026.