#1 Largest Private Schools in Oregon
Jesuit High School
Independent Catholic school · Grades 9–12
1,279 students
Portland, OR
AOverall grade1,279 students13 students per teacher
2026 lists
Largest Private Schools in Oregon
The private schools in Oregon with the most students. Top 50 of 229 schools.
#2 Largest Private Schools in Oregon
Valley Catholic High School
Independent Catholic school · Grades K–12
1,006 students
Beaverton, OR
A+Overall grade1,006 students11 students per teacher
#3 Largest Private Schools in Oregon
Central Catholic High School
Diocesan school · Grades 9–12
865 students
Portland, OR
B+Overall grade865 students15 students per teacher
#4 Largest Private Schools in Oregon
Catlin Gabel School
Independent school · Grades Pre-K–12
767 students
Portland, OR
B+Overall grade767 students33 students per teacher
#5 Largest Private Schools in Oregon
Catlin Gabel
Independent school · Grades Pre-K–12
763 students
Portland, OR
A+Overall grade763 students8 students per teacher
#6 Largest Private Schools in Oregon
Santiam Christian School
Christian school (nondenominational) · Grades Pre-K–12
711 students
Adair Village, OR
B-Overall grade711 students14 students per teacher
#7 Largest Private Schools in Oregon
Grace Cascade Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
677 students
Medford, OR
B-Overall grade677 students17 students per teacher
#8 Largest Private Schools in Oregon
La Salle Catholic College Preparatory
Independent Catholic school · Grades 9–12
659 students
Milwaukie, OR
B-Overall grade659 students17 students per teacher
#9 Largest Private Schools in Oregon
Horizon Christian School
Christian school (nondenominational) · Grades Pre-K–12
644 students
Tualatin, OR
B-Overall grade644 students17 students per teacher
#10 Largest Private Schools in Oregon
Horizon Christian Elememtary/Middle School
Christian school (nondenominational) · Grades K–12
629 students
Tualatin, OR
B-Overall grade629 students16 students per teacher
#11 Largest Private Schools in Oregon
Portland Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
628 students
Portland, OR
AOverall grade628 students14 students per teacher
#12 Largest Private Schools in Oregon
St. Marys Academy
Independent Catholic school · Grades 9–12
606 students
Portland, OR
A-Overall gradeAll girls606 students12 students per teacher
#13 Largest Private Schools in Oregon
Trinity Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–12
527 students
Bend, OR
AOverall grade527 students12 students per teacher
#14 Largest Private Schools in Oregon
St. Mary's of Medford
Independent Catholic school · Grades 5–12
526 students
Medford, OR
A+Overall grade526 students9 students per teacher
#15 Largest Private Schools in Oregon
St. Pius X School
Diocesan school · Grades K–8
513 students
Portland, OR
A+Overall grade513 students8 students per teacher
#16 Largest Private Schools in Oregon
Crosshill Christian School
Christian school (nondenominational) · Grades Pre-K–12
493 students
Turner, OR
A+Overall grade493 students9 students per teacher
#17 Largest Private Schools in Oregon
Faith Bible Christian School
Christian school (nondenominational) · Grades Pre-K–12
479 students
Hillsboro, OR
B+Overall grade479 students12 students per teacher
#18 Largest Private Schools in Oregon
O'Hara Catholic Elementary School
Diocesan school · Grades Pre-K–8
455 students
Eugene, OR
B+Overall grade455 students14 students per teacher
#19 Largest Private Schools in Oregon
French International School of Oregon
Independent school · Grades Pre-K–8
451 students
Portland, OR
AOverall grade451 students7 students per teacher
#20 Largest Private Schools in Oregon
Western Christian School
Mennonite school · Grades Pre-K–12
447 students
Salem, OR
BOverall grade447 students14 students per teacher
#21 Largest Private Schools in Oregon
Grand View Christian Academy
Baptist school · Grades Pre-K–12
412 students
Beavercreek, OR
B-Overall grade412 students16 students per teacher
#22 Largest Private Schools in Oregon
Country Christian School
Christian school (nondenominational) · Grades Pre-K–12
411 students
Molalla, OR
B-Overall grade411 students15 students per teacher
#23 Largest Private Schools in Oregon
Marist Catholic High School
Diocesan school · Grades 9–12
405 students
Eugene, OR
AOverall grade405 students11 students per teacher
#24 Largest Private Schools in Oregon
Blanchet Catholic School
Independent Catholic school · Grades 6–12
396 students
Salem, OR
B+Overall grade396 students16 students per teacher
From official public records, updated October 2026.