#1 Largest Private Schools in Idaho
Cole Valley Christian Schools-Secondary
Christian school (nondenominational) · Grades Pre-K–12
1,263 students
Meridian, ID
B-Overall grade1,263 students16 students per teacher
2026 lists
Largest Private Schools in Idaho
The private schools in Idaho with the most students. Top 50 of 88 schools.
#2 Largest Private Schools in Idaho
Logos Online School
Christian school (nondenominational) · Grades 7–12
1,200 students
Moscow, ID
B-Overall grade1,200 students23 students per teacher
#3 Largest Private Schools in Idaho
CLRC
Independent school · Grades 1–12
1,000 students
Naples, ID
B-Overall grade1,000 students
#4 Largest Private Schools in Idaho
Bishop Kelly High School
Diocesan school · Grades 9–12
967 students
Boise, ID
BOverall grade967 students16 students per teacher
#5 Largest Private Schools in Idaho
Nampa Christian High School
Christian school (nondenominational) · Grades Pre-K–12
889 students
Nampa, ID
B-Overall grade889 students16 students per teacher
#6 Largest Private Schools in Idaho
Nampa Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
889 students
Nampa, ID
BOverall grade889 students16 students per teacher
#7 Largest Private Schools in Idaho
Nampa Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
886 students
Nampa, ID
BOverall grade886 students21 students per teacher
#8 Largest Private Schools in Idaho
Genesis Preparatory Academy
Christian school (nondenominational) · Grades Pre-K–12
541 students
Post Falls, ID
B-Overall grade541 students16 students per teacher
#9 Largest Private Schools in Idaho
Genesis Prep Academy
Christian school (nondenominational) · Grades Pre-K–12
466 students
Post Falls, ID
BOverall grade466 students11 students per teacher
#10 Largest Private Schools in Idaho
Grace Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–12
430 students
Pocatello, ID
A+Overall grade430 students9 students per teacher
#11 Largest Private Schools in Idaho
St. Ignatius Catholic School
Diocesan school · Grades Pre-K–8
428 students
Meridian, ID
B-Overall grade428 students18 students per teacher
#12 Largest Private Schools in Idaho
Sun Valley Community School-Middle
Independent school · Grades Pre-K–12
397 students
Sun Valley, ID
B+Overall grade397 students8 students per teacher
#13 Largest Private Schools in Idaho
Sun Valley Community School-Upper
Independent school · Grades Pre-K–12
397 students
Sun Valley, ID
A+Overall grade397 students5 students per teacher
#14 Largest Private Schools in Idaho
Sun Valley Community School
Independent school · Grades Pre-K–12
391 students
Sun Valley, ID
B+Overall grade391 students7 students per teacher
#15 Largest Private Schools in Idaho
St. Joseph's Catholic School
Diocesan school · Grades K–8
367 students
Boise, ID
B+Overall grade367 students15 students per teacher
#16 Largest Private Schools in Idaho
Watersprings School
Christian school (nondenominational) · Grades Pre-K–12
364 students
Idaho Falls, ID
A-Overall grade364 students12 students per teacher
#17 Largest Private Schools in Idaho
Watersprings School
Christian school (nondenominational) · Grades Pre-K–12
363 students
Idaho Falls, ID
BOverall grade363 students12 students per teacher
#18 Largest Private Schools in Idaho
Riverstone International School
Independent school · Grades Pre-K–12
349 students
Boise, ID
A+Overall grade349 students5 students per teacher
#19 Largest Private Schools in Idaho
St. Marks Elementary School
Parish school · Grades Pre-K–8
323 students
Boise, ID
AOverall grade323 students14 students per teacher
#20 Largest Private Schools in Idaho
Lighthouse Christian School
Christian school (nondenominational) · Grades Pre-K–12
305 students
Twin Falls, ID
B-Overall grade305 students15 students per teacher
#21 Largest Private Schools in Idaho
Holy Family Catholic School
Diocesan school · Grades Pre-K–8
241 students
Coeur d'Alene, ID
AOverall grade241 students14 students per teacher
#22 Largest Private Schools in Idaho
Christian Center School
Christian school (nondenominational) · Grades Pre-K–12
230 students
Hayden, ID
BOverall grade230 students13 students per teacher
#23 Largest Private Schools in Idaho
Greenleaf Friends Academy
Quaker (Friends) school · Grades K–12
228 students
Greenleaf, ID
B-Overall grade228 students14 students per teacher
#24 Largest Private Schools in Idaho
North Idaho Christian School
Christian school (nondenominational) · Grades K–12
228 students
Hayden, ID
BOverall grade228 students14 students per teacher
From official public records, updated October 2026.