#25 Private Schools with the Smallest Classes in Idaho
Immaculate Conception Academy
Independent Catholic school · Grades K–12
10.4 students per teacher
Post Falls, ID
BOverall gradeAll boys188 students10 students per teacher
2026 lists
Private Schools with the Smallest Classes in Idaho
Private schools in Idaho with the fewest students per teacher (not counting preschools and special education schools). Top 50 of 63 schools.
#26 Private Schools with the Smallest Classes in Idaho
Mountain View Christian School
Mennonite school · Grades 1–8
10.5 students per teacher
Bonners Ferry, ID
BOverall grade79 students11 students per teacher
#27 Private Schools with the Smallest Classes in Idaho
Gem State Adventist Academy
Seventh-day Adventist school · Grades 9–12
10.9 students per teacher
Caldwell, ID
BOverall grade83 students11 students per teacher
#28 Private Schools with the Smallest Classes in Idaho
Genesis Prep Academy
Christian school (nondenominational) · Grades Pre-K–12
11 students per teacher
Post Falls, ID
BOverall grade466 students11 students per teacher
#29 Private Schools with the Smallest Classes in Idaho
Summit Christian Academy
Christian school (nondenominational) · Grades Pre-K–6
11.3 students per teacher
Coeur d'Alene, ID
BOverall grade107 students11 students per teacher
#30 Private Schools with the Smallest Classes in Idaho
Watersprings School
Christian school (nondenominational) · Grades Pre-K–12
11.7 students per teacher
Idaho Falls, ID
BOverall grade363 students12 students per teacher
#31 Private Schools with the Smallest Classes in Idaho
Holy Rosary Catholic School
Parish school · Grades Pre-K–5
12 students per teacher
Idaho Falls, ID
A+Overall grade79 students12 students per teacher
#32 Private Schools with the Smallest Classes in Idaho
Watersprings School
Christian school (nondenominational) · Grades Pre-K–12
12.3 students per teacher
Idaho Falls, ID
A-Overall grade364 students12 students per teacher
#33 Private Schools with the Smallest Classes in Idaho
Boise Valley Adventist School
Seventh-day Adventist school · Grades Pre-K–8
12.9 students per teacher
Boise, ID
BOverall grade75 students13 students per teacher
#34 Private Schools with the Smallest Classes in Idaho
Sts. Peter & Paul School
Parish school · Grades Pre-K–8
12.9 students per teacher
Grangeville, ID
A-Overall grade63 students13 students per teacher
#35 Private Schools with the Smallest Classes in Idaho
Pioneer Montessori School
Montessori school · Grades Pre-K–6
13 students per teacher
Ketchum, ID
BOverall grade104 students13 students per teacher
#36 Private Schools with the Smallest Classes in Idaho
Caldwell Adventist Elementary
Seventh-day Adventist school · Grades Pre-K–8
13 students per teacher
Caldwell, ID
B+Overall grade52 students13 students per teacher
#37 Private Schools with the Smallest Classes in Idaho
Christian Center School
Christian school (nondenominational) · Grades Pre-K–12
13.1 students per teacher
Hayden, ID
BOverall grade230 students13 students per teacher
#38 Private Schools with the Smallest Classes in Idaho
Calvary Christian School
Christian school (nondenominational) · Grades Pre-K–8
13.2 students per teacher
Boise, ID
BOverall grade223 students13 students per teacher
#39 Private Schools with the Smallest Classes in Idaho
Holy Family Catholic School
Diocesan school · Grades Pre-K–8
13.5 students per teacher
Coeur d'Alene, ID
AOverall grade241 students14 students per teacher
#40 Private Schools with the Smallest Classes in Idaho
St. Marks Elementary School
Parish school · Grades Pre-K–8
13.7 students per teacher
Boise, ID
AOverall grade323 students14 students per teacher
#41 Private Schools with the Smallest Classes in Idaho
Calvary Christian School
Christian school (nondenominational) · Grades Pre-K–12
13.8 students per teacher
Nampa, ID
B+Overall grade73 students14 students per teacher
#42 Private Schools with the Smallest Classes in Idaho
Greenleaf Friends Academy
Quaker (Friends) school · Grades K–12
14 students per teacher
Greenleaf, ID
B-Overall grade228 students14 students per teacher
#43 Private Schools with the Smallest Classes in Idaho
North Idaho Christian School
Christian school (nondenominational) · Grades K–12
14 students per teacher
Hayden, ID
BOverall grade228 students14 students per teacher
#44 Private Schools with the Smallest Classes in Idaho
Lake City Academy
Seventh-day Adventist school · Grades Pre-K–8
14.7 students per teacher
Coeur d'Alene, ID
B-Overall grade140 students15 students per teacher
#45 Private Schools with the Smallest Classes in Idaho
Lighthouse Christian School
Christian school (nondenominational) · Grades Pre-K–12
14.9 students per teacher
Twin Falls, ID
B-Overall grade305 students15 students per teacher
#46 Private Schools with the Smallest Classes in Idaho
Sacred Heart Catholic School
Diocesan school · Grades Pre-K–8
15 students per teacher
Boise, ID
BOverall grade195 students15 students per teacher
#47 Private Schools with the Smallest Classes in Idaho
Calvary Meridian Prep Academy
Christian school (nondenominational) · Grades K–10
15 students per teacher
Meridian, ID
BOverall grade185 students15 students per teacher
#48 Private Schools with the Smallest Classes in Idaho
St. Joseph's Catholic School
Diocesan school · Grades K–8
15.3 students per teacher
Boise, ID
B+Overall grade367 students15 students per teacher
From official public records, updated October 2026.