#1 Best Private High Schools in Idaho
Riverstone International School
Independent school · Grades Pre-K–12
The smallest classes of any independent school in Boise
Boise, ID
A+Overall grade349 students5 students per teacher
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Best Private High Schools in Idaho
Private high schools in Idaho with the highest overall grades. Top 23 of 23 schools.
#2 Best Private High Schools in Idaho
Grace Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–12
The only Christian school in Pocatello
Pocatello, ID
A+Overall grade430 students9 students per teacher
#3 Best Private High Schools in Idaho
Sun Valley Community School-Upper
Independent school · Grades Pre-K–12
The smallest classes of any independent school in Sun Valley
Sun Valley, ID
A+Overall grade397 students5 students per teacher
#4 Best Private High Schools in Idaho
The Sage School
Alternative school · Grades 6–12
Growing: enrollment up 127% since 2011–12
Hailey, ID
A-Overall grade91 students7 students per teacher
#5 Best Private High Schools in Idaho
Watersprings School
Christian school (nondenominational) · Grades Pre-K–12
The largest Christian school in Idaho Falls
Idaho Falls, ID
A-Overall grade364 students12 students per teacher
#6 Best Private High Schools in Idaho
Sun Valley Community School
Independent school · Grades Pre-K–12
100% of graduates go to four-year colleges
Sun Valley, ID
B+Overall grade391 students7 students per teacher
#7 Best Private High Schools in Idaho
Sun Valley Community School-Middle
Independent school · Grades Pre-K–12
One of the 3 largest independent schools in Idaho
Sun Valley, ID
B+Overall grade397 students8 students per teacher
#8 Best Private High Schools in Idaho
Gem State Adventist Academy
Seventh-day Adventist school · Grades 9–12
The smallest classes of any Christian school in Caldwell
Caldwell, ID
B+Overall grade78 students10 students per teacher
#9 Best Private High Schools in Idaho
Watersprings School
Christian school (nondenominational) · Grades Pre-K–12
One school from pre-K through 12th grade
Idaho Falls, ID
BOverall grade363 students12 students per teacher
#10 Best Private High Schools in Idaho
Christian Center School
Christian school (nondenominational) · Grades Pre-K–12
One of the most diverse private schools in Idaho
Hayden, ID
BOverall grade230 students13 students per teacher
#11 Best Private High Schools in Idaho
House of the Lord Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
Smaller classes than 76% of Christian schools in Idaho
Oldtown, ID
BOverall grade130 students8 students per teacher
#12 Best Private High Schools in Idaho
Bishop Kelly High School
Diocesan school · Grades 9–12
The largest of 17 Catholic schools in Idaho
Boise, ID
BOverall grade967 students16 students per teacher
#13 Best Private High Schools in Idaho
Gem State Adventist Academy
Seventh-day Adventist school · Grades 9–12
The largest Christian school in Caldwell
Caldwell, ID
BOverall grade83 students11 students per teacher
#14 Best Private High Schools in Idaho
Nampa Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
One of the 3 largest Christian schools in Idaho
Nampa, ID
BOverall grade889 students16 students per teacher
#15 Best Private High Schools in Idaho
Genesis Prep Academy
Christian school (nondenominational) · Grades Pre-K–12
90% of graduates go to four-year colleges
Post Falls, ID
BOverall grade466 students11 students per teacher
#16 Best Private High Schools in Idaho
Nampa Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
One of the most diverse private schools in Idaho
Nampa, ID
BOverall grade886 students21 students per teacher
#17 Best Private High Schools in Idaho
One Stone
Independent school · Grades 9–12
One of 3 independent schools in Boise
Boise, ID
BOverall grade87 students36 students per teacher
#18 Best Private High Schools in Idaho
CLRC
Independent school · Grades 1–12
The largest of 13 independent schools in Idaho
Naples, ID
B-Overall grade1,000 students
#19 Best Private High Schools in Idaho
Lighthouse Christian School
Christian school (nondenominational) · Grades Pre-K–12
Growing: enrollment up 36% since 2011–12
Twin Falls, ID
B-Overall grade305 students15 students per teacher
#20 Best Private High Schools in Idaho
Logos Online School
Christian school (nondenominational) · Grades 7–12
One of the 3 largest Christian schools in Idaho
Moscow, ID
B-Overall grade1,200 students23 students per teacher
#21 Best Private High Schools in Idaho
Nampa Christian High School
Christian school (nondenominational) · Grades Pre-K–12
One of the 3 largest Christian schools in Idaho
Nampa, ID
B-Overall grade889 students16 students per teacher
#22 Best Private High Schools in Idaho
Cole Valley Christian Schools-Secondary
Christian school (nondenominational) · Grades Pre-K–12
The largest of 52 Christian schools in Idaho
Meridian, ID
B-Overall grade1,263 students16 students per teacher
#23 Best Private High Schools in Idaho
Genesis Preparatory Academy
Christian school (nondenominational) · Grades Pre-K–12
The largest Christian school in Post Falls
Post Falls, ID
B-Overall grade541 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.