#1 Private Schools with the Smallest Classes in Colorado
Fusion Academy Denver
Independent school · Grades 6–12
1.9 students per teacher
Greenwood Village, CO
AOverall grade42 students2 students per teacher
2026 lists
Private Schools with the Smallest Classes in Colorado
Private schools in Colorado with the fewest students per teacher (not counting preschools and special education schools). Top 50 of 163 schools.
#2 Private Schools with the Smallest Classes in Colorado
St. Therese Catholic School
Diocesan school · Grades Pre-K–8
3.2 students per teacher
Pueblo, CO
A+Overall grade52 students3 students per teacher
#3 Private Schools with the Smallest Classes in Colorado
High Mountain Institute
Alternative school · Grades 11–12
3.4 students per teacher
Leadville, CO
AOverall grade44 students3 students per teacher
#4 Private Schools with the Smallest Classes in Colorado
Longmont Christian School
Christian school (nondenominational) · Grades Pre-K–8
3.6 students per teacher
Longmont, CO
A+Overall grade47 students4 students per teacher
#5 Private Schools with the Smallest Classes in Colorado
Montessori Children's House of Denver
Montessori school · Grades K–5
3.6 students per teacher
Denver, CO
AOverall grade43 students4 students per teacher
#6 Private Schools with the Smallest Classes in Colorado
Bixby School
Independent school · Grades Pre-K–5
3.7 students per teacher
Boulder, CO
A+Overall grade93 students4 students per teacher
#7 Private Schools with the Smallest Classes in Colorado
Montessori School of Evergreen
Montessori school · Grades Pre-K–8
3.7 students per teacher
Evergreen, CO
AOverall grade77 students4 students per teacher
#8 Private Schools with the Smallest Classes in Colorado
Beth Jacob High School of Denver
Jewish day school · Grades 9–12
3.7 students per teacher
Denver, CO
AOverall gradeAll girls43 students4 students per teacher
#9 Private Schools with the Smallest Classes in Colorado
Ricks Center for Gifted Children
Independent school · Grades Pre-K–8
3.9 students per teacher
Denver, CO
A+Overall grade157 students4 students per teacher
#10 Private Schools with the Smallest Classes in Colorado
Christian Core Academy
Christian school (nondenominational) · Grades Pre-K–8
3.9 students per teacher
Fort Collins, CO
AOverall grade59 students4 students per teacher
#11 Private Schools with the Smallest Classes in Colorado
Face School
Christian school (nondenominational) · Grades Pre-K–12
4 students per teacher
Westminster, CO
A+Overall grade351 students4 students per teacher
#12 Private Schools with the Smallest Classes in Colorado
Waldorf School on the Roaring Fork
Independent school · Grades Pre-K–8
4.4 students per teacher
Carbondale, CO
A-Overall grade175 students4 students per teacher
#13 Private Schools with the Smallest Classes in Colorado
Montessori Academy of Colorado
Montessori school · Grades Pre-K–8
4.5 students per teacher
Denver, CO
A+Overall grade76 students5 students per teacher
#14 Private Schools with the Smallest Classes in Colorado
Fountain Valley School of Colorado
Independent school · Grades 9–12
4.6 students per teacher
Colorado Springs, CO
A+Overall grade233 students5 students per teacher
#15 Private Schools with the Smallest Classes in Colorado
Vail Christian High School
Christian school (nondenominational) · Grades 9–12
4.7 students per teacher
Edward, CO
A+Overall grade158 students5 students per teacher
#16 Private Schools with the Smallest Classes in Colorado
St. Elizabeth's School
Episcopal school · Grades K–8
4.7 students per teacher
Denver, CO
A+Overall grade133 students5 students per teacher
#17 Private Schools with the Smallest Classes in Colorado
Christian Growth Academy
Pentecostal school · Grades K–12
4.8 students per teacher
Pueblo, CO
AOverall grade43 students5 students per teacher
#18 Private Schools with the Smallest Classes in Colorado
Boulder Valley Waldorf School
Independent school · Grades Pre-K–8
4.9 students per teacher
Niwot, CO
A-Overall grade95 students5 students per teacher
#19 Private Schools with the Smallest Classes in Colorado
Denver Jewish Day School
Jewish day school · Grades Pre-K–12
5.2 students per teacher
Denver, CO
A+Overall grade316 students5 students per teacher
#20 Private Schools with the Smallest Classes in Colorado
Steamboat Mountain School
Independent school · Grades K–12
5.4 students per teacher
Steamboat Springs, CO
AOverall grade190 students5 students per teacher
#21 Private Schools with the Smallest Classes in Colorado
Shining Mtn. Waldorf High School
Independent school · Grades Pre-K–12
5.4 students per teacher
Boulder, CO
AOverall grade188 students5 students per teacher
#22 Private Schools with the Smallest Classes in Colorado
Steamboat Mountain School
Independent school · Grades K–12
5.4 students per teacher
Steamboat Springs, CO
BOverall grade182 students5 students per teacher
#23 Private Schools with the Smallest Classes in Colorado
Landmark Baptist School
Baptist school · Grades Pre-K–12
5.4 students per teacher
Grand Junction, CO
AOverall grade61 students5 students per teacher
#24 Private Schools with the Smallest Classes in Colorado
Heritage Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
5.5 students per teacher
Colorado Springs, CO
AOverall grade60 students6 students per teacher
From official public records, updated October 2026.