#1 Best Private High Schools in Multnomah County, OR
Portland Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
The largest Christian school in Portland
Portland, OR
AOverall grade628 students14 students per teacher
2026 lists
Best Private High Schools in Multnomah County, OR
Private high schools in Multnomah County, OR with the highest overall grades. Top 8 of 8 schools.
#2 Best Private High Schools in Multnomah County, OR
De La Salle North Catholic High School
Independent Catholic school · Grades 9–12
One of the most diverse private schools in Oregon
Portland, OR
AOverall grade220 students12 students per teacher
#3 Best Private High Schools in Multnomah County, OR
St. Marys Academy
Independent Catholic school · Grades 9–12
The only all-girls school in Portland
Portland, OR
A-Overall gradeAll girls606 students12 students per teacher
#4 Best Private High Schools in Multnomah County, OR
Columbia Christian Schools
Church of Christ school · Grades Pre-K–12
Growing: enrollment up 42% since 2011–12
Portland, OR
B+Overall grade322 students13 students per teacher
#5 Best Private High Schools in Multnomah County, OR
Portland Adventist Academy
Seventh-day Adventist school · Grades 9–12
85% of graduates go to four-year colleges
Portland, OR
B+Overall grade193 students13 students per teacher
#6 Best Private High Schools in Multnomah County, OR
Central Catholic High School
Diocesan school · Grades 9–12
One of the 3 largest Catholic schools in Oregon
Portland, OR
B+Overall grade865 students15 students per teacher
#7 Best Private High Schools in Multnomah County, OR
Rosemary Anderson High School/Portland Oic
Alternative school · Grades 6–12
One of the most diverse private schools in Oregon
Portland, OR
B-Overall grade326 students14 students per teacher
#8 Best Private High Schools in Multnomah County, OR
Open Door Christian Academy
Baptist school · Grades Pre-K–12
Serving families in Troutdale since at least 2011
Troutdale, OR
B-Overall grade291 students20 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.