#1 Best Private Middle 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 Middle Schools in Clackamas County, OR
Private schools in Clackamas County, OR with middle-school grades and the highest overall grades. Top 17 of 17 schools.
#2 Best Private Middle 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 Middle 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 Middle 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 Middle 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 Middle 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 Middle 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 Middle 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
#9 Best Private Middle 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
#10 Best Private Middle 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
#11 Best Private Middle 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
#12 Best Private Middle 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
#13 Best Private Middle 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
#14 Best Private Middle 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
#15 Best Private Middle 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
#16 Best Private Middle 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
#17 Best Private Middle 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.