#1 Private Schools with the Smallest Classes in South Dakota
McCrossan Boys Ranch
Independent school · Grades 6–12
4.4 students per teacher
Sioux Falls, SD
AOverall gradeAll boys40 students4 students per teacher
2026 lists
Private Schools with the Smallest Classes in South Dakota
Private schools in South Dakota with the fewest students per teacher (not counting preschools and special education schools). Top 49 of 49 schools.
#2 Private Schools with the Smallest Classes in South Dakota
Freeman Academy
Mennonite school · Grades Pre-K–12
4.6 students per teacher
Freeman, SD
A+Overall grade56 students5 students per teacher
#3 Private Schools with the Smallest Classes in South Dakota
Christ the King Grade School
Parish school · Grades Pre-K–6
5.3 students per teacher
Sioux Falls, SD
AOverall grade102 students5 students per teacher
#4 Private Schools with the Smallest Classes in South Dakota
Pierre Indian Learning Center
Alternative school · Grades 1–8
6.3 students per teacher
Pierre, SD
BOverall grade107 students6 students per teacher
#5 Private Schools with the Smallest Classes in South Dakota
Red Cloud Indian School
Diocesan school · Grades K–12
6.7 students per teacher
Pine Ridge, SD
A+Overall grade435 students7 students per teacher
#6 Private Schools with the Smallest Classes in South Dakota
St. Joseph Indian School
Independent Catholic school · Grades 1–8
7.1 students per teacher
Chamberlain, SD
B+Overall grade134 students7 students per teacher
#7 Private Schools with the Smallest Classes in South Dakota
Sunshine Bible Academy
Christian school (nondenominational) · Grades Pre-K–12
7.1 students per teacher
Miller, SD
A+Overall grade82 students7 students per teacher
#8 Private Schools with the Smallest Classes in South Dakota
Children's Home Society of Sd/Loving School
Alternative school · Grades Pre-K–8
7.3 students per teacher
Sioux Falls, SD
A+Overall grade85 students7 students per teacher
#9 Private Schools with the Smallest Classes in South Dakota
St. Thomas More Catholic School
Parish school · Grades Pre-K–4
7.3 students per teacher
Brookings, SD
B+Overall grade74 students7 students per teacher
#10 Private Schools with the Smallest Classes in South Dakota
Windswept Academy
Christian school (nondenominational) · Grades K–11
7.5 students per teacher
Eagle Butte, SD
A-Overall grade61 students8 students per teacher
#11 Private Schools with the Smallest Classes in South Dakota
St. John Paul II Elementary School
Parish school · Grades Pre-K–6
7.7 students per teacher
Mitchell, SD
AOverall grade82 students8 students per teacher
#12 Private Schools with the Smallest Classes in South Dakota
Aberdeen Christian School
Christian school (nondenominational) · Grades Pre-K–12
8 students per teacher
Aberdeen, SD
BOverall grade206 students8 students per teacher
#13 Private Schools with the Smallest Classes in South Dakota
Accurate and Conscious Education Academy
Alternative school · Grades Pre-K–10
8.4 students per teacher
Sioux Falls, SD
B+Overall grade46 students8 students per teacher
#14 Private Schools with the Smallest Classes in South Dakota
Sacred Heart School
Parish school · Grades Pre-K–8
8.7 students per teacher
Yankton, SD
AOverall grade263 students9 students per teacher
#15 Private Schools with the Smallest Classes in South Dakota
Sacred Heart Middle School
Independent Catholic school · Grades Pre-K–8
8.8 students per teacher
Yankton, SD
B+Overall grade230 students9 students per teacher
#16 Private Schools with the Smallest Classes in South Dakota
Dakota Christian School
Christian school (nondenominational) · Grades Pre-K–12
9 students per teacher
Corsica, SD
B+Overall grade94 students9 students per teacher
#17 Private Schools with the Smallest Classes in South Dakota
Children's House Montessori
Montessori school · Grades Pre-K–6
9 students per teacher
Rapid City, SD
B+Overall grade45 students9 students per teacher
#18 Private Schools with the Smallest Classes in South Dakota
St. Thomas School
Independent Catholic school · Grades Pre-K–5
9.2 students per teacher
Madison, SD
AOverall grade44 students9 students per teacher
#19 Private Schools with the Smallest Classes in South Dakota
Our Lady of Lourdes Elementary
Parish school · Grades K–8
9.4 students per teacher
Porcupine, SD
BOverall grade113 students9 students per teacher
#20 Private Schools with the Smallest Classes in South Dakota
Mitchell Christian School
Christian school (nondenominational) · Grades Pre-K–12
9.7 students per teacher
Mitchell, SD
BOverall grade147 students10 students per teacher
#21 Private Schools with the Smallest Classes in South Dakota
Black Hills Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
9.7 students per teacher
Spearfish, SD
BOverall grade134 students10 students per teacher
#22 Private Schools with the Smallest Classes in South Dakota
St. Michael School
Diocesan school · Grades Pre-K–6
9.8 students per teacher
Sioux Falls, SD
BOverall grade187 students10 students per teacher
#23 Private Schools with the Smallest Classes in South Dakota
St. Agnes Elementary School
Diocesan school · Grades Pre-K–5
9.8 students per teacher
Vermillion, SD
B+Overall grade88 students10 students per teacher
#24 Private Schools with the Smallest Classes in South Dakota
St. Lawrence School
Parish school · Grades Pre-K–6
10.1 students per teacher
Milbank, SD
BOverall grade91 students10 students per teacher
From official public records, updated October 2026.