#1 Best Private High Schools in Washington County, OR
Catlin Gabel
Independent school · Grades Pre-K–12
One of the 3 largest independent schools in Oregon
Portland, OR
A+Overall grade763 students8 students per teacher
2026 lists
Best Private High Schools in Washington County, OR
Private high schools in Washington County, OR with the highest overall grades. Top 9 of 9 schools.
#2 Best Private High Schools in Washington County, OR
Valley Catholic High School
Independent Catholic school · Grades K–12
The smallest classes of any Catholic school in Beaverton
Beaverton, OR
A+Overall grade1,006 students11 students per teacher
#3 Best Private High Schools in Washington County, OR
Jesuit High School
Independent Catholic school · Grades 9–12
The largest of 56 Catholic schools in Oregon
Portland, OR
AOverall grade1,279 students13 students per teacher
#4 Best Private High Schools in Washington County, OR
Edison High School
Alternative school · Grades 9–12
Smaller classes than 62% of independent schools in Oregon
Portland, OR
A-Overall grade135 students7 students per teacher
#5 Best Private High Schools in Washington County, OR
Faith Bible Christian School
Christian school (nondenominational) · Grades Pre-K–12
The only Christian school in Hillsboro
Hillsboro, OR
B+Overall grade479 students12 students per teacher
#6 Best Private High Schools in Washington County, OR
Catlin Gabel School
Independent school · Grades Pre-K–12
The largest of 67 independent schools in Oregon
Portland, OR
B+Overall grade767 students33 students per teacher
#7 Best Private High Schools in Washington County, OR
Valor Christian School International
Independent school · Grades Pre-K–12
The largest independent school in Beaverton
Beaverton, OR
BOverall grade294 students12 students per teacher
#8 Best Private High Schools in Washington County, OR
Horizon Christian Elememtary/Middle School
Christian school (nondenominational) · Grades K–12
Growing: enrollment up 89% since 2011–12
Tualatin, OR
B-Overall grade629 students16 students per teacher
#9 Best Private High Schools in Washington County, OR
Horizon Christian School
Christian school (nondenominational) · Grades Pre-K–12
One of the 3 largest Christian schools in Oregon
Tualatin, OR
B-Overall grade644 students17 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.