#1 Best Private Schools in Clackamas County, OR
St. John the Baptist Catholic School
Diocesan school · Grades Pre-K–8
Smaller classes than 80% of Catholic schools in Oregon
Milwaukie, OR
A+Overall grade146 students9 students per teacher
2026 lists
Best Private Schools in Clackamas County, OR
Private schools in Clackamas County, OR with the highest overall grades. Top 21 of 21 schools.
#2 Best Private Schools in Clackamas County, OR
Arbor School of Arts & Sciences
Independent school · Grades K–8
The only independent school in Tualatin
Tualatin, OR
AOverall grade193 students6 students per teacher
#3 Best Private Schools in Clackamas County, OR
Portland Waldorf School
Independent school · Grades Pre-K–12
88% of graduates go to four-year colleges
Milwaukie, OR
AOverall grade296 students10 students per teacher
#4 Best Private Schools in Clackamas County, OR
Spring Mountain Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
Smaller classes than 66% of Christian schools in Oregon
Clackamas, OR
A-Overall grade186 students10 students per teacher
#5 Best Private Schools in Clackamas County, OR
Micha-El School
Independent school · Grades K–7
Small classes: about 7 students per teacher
Milwaukie, OR
A-Overall grade66 students7 students per teacher
#6 Best Private Schools in Clackamas County, OR
Maayan Torah Day School
Jewish day school · Grades Pre-K–10
Smaller classes than 66% of Jewish day schools nationwide
Lake Oswego, OR
B+Overall grade62 students6 students per teacher
#7 Best Private Schools in Clackamas County, OR
Maayan Torah Day School
Jewish day school · Grades K–10
Smaller classes than 86% of Jewish day schools nationwide
Lake Oswego, OR
B+Overall grade63 students5 students per teacher
#8 Best Private Schools in Clackamas County, OR
International Leadership Academy
Independent school · Grades Pre-K–5
The only independent school in Lake Oswego
Lake Oswego, OR
B+Overall grade69 students11 students per teacher
#9 Best Private Schools in Clackamas County, OR
Resurrection Catholic Parish School
Parish school · Grades Pre-K–5
The only Catholic school in Tualatin
Tualatin, OR
B+Overall grade66 students14 students per teacher
#10 Best Private Schools in Clackamas County, OR
The Marylhurst School
Alternative school · Grades Pre-K–8
Serving families in Oregon City since at least 2011
Oregon City, OR
BOverall grade105 students13 students per teacher
#11 Best Private Schools in Clackamas County, OR
Wy East Mountain Academy
Independent school · Grades 8–12
90% of graduates go to four-year colleges
Welches, OR
BOverall grade64 students32 students per teacher
#12 Best Private Schools in Clackamas County, OR
North Clackamas Christian School
Christian school (nondenominational) · Grades Pre-K–12
The only Christian school in Oregon City
Oregon City, OR
BOverall grade302 students15 students per teacher
#13 Best Private Schools in Clackamas County, OR
Hood View Adventist School
Seventh-day Adventist school · Grades Pre-K–8
Growing: enrollment up 90% since 2011–12
Boring, OR
BOverall grade188 students15 students per teacher
#14 Best Private Schools in Clackamas County, OR
Strike School
Alternative school · Grades K–12
One of 2 independent schools in Oregon City
Oregon City, OR
BOverall grade113 students18 students per teacher
#15 Best Private Schools in Clackamas County, OR
Good Shepherd School
Christian school (nondenominational) · Grades Pre-K–8
Growing: enrollment up 16% since 2011–12
Boring, OR
B-Overall grade222 students16 students per teacher
#16 Best Private Schools in Clackamas County, OR
La Salle Catholic College Preparatory
Independent Catholic school · Grades 9–12
88% of graduates go to four-year colleges
Milwaukie, OR
B-Overall grade659 students17 students per teacher
#17 Best Private Schools in Clackamas County, OR
Rivergate Adventist Elementary School
Seventh-day Adventist school · Grades Pre-K–8
Serving families in Gladstone since at least 2011
Gladstone, OR
B-Overall grade116 students18 students per teacher
#18 Best Private Schools in Clackamas County, OR
Damascus Christian School
Christian school (nondenominational) · Grades Pre-K–12
Growing: enrollment up 43% since 2013–14
Damascus, OR
B-Overall grade344 students14 students per teacher
#19 Best Private Schools in Clackamas County, OR
Our Lady of the Lake Cartholic School
Diocesan school · Grades Pre-K–8
The only Catholic school in Lake Oswego
Lake Oswego, OR
B-Overall grade256 students28 students per teacher
#20 Best Private Schools in Clackamas County, OR
Country Christian School
Christian school (nondenominational) · Grades Pre-K–12
Growing: enrollment up 110% since 2011–12
Molalla, OR
B-Overall grade411 students15 students per teacher
#21 Best Private Schools in Clackamas County, OR
Grand View Christian Academy
Baptist school · Grades Pre-K–12
One school from pre-K through 12th grade
Beavercreek, OR
B-Overall grade412 students16 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.