#1 Largest Private Schools in Dekalb County, GA
Marist School
Independent Catholic school · Grades 7–12
1,082 students
Atlanta, GA
A+Overall grade1,082 students12 students per teacher
2026 lists
Largest Private Schools in Dekalb County, GA
The private schools in Dekalb County, GA with the most students. Top 48 of 48 schools.
#2 Largest Private Schools in Dekalb County, GA
St. Pius X Catholic High School
Diocesan school · Grades 9–12
1,054 students
Atlanta, GA
A+Overall grade1,054 students10 students per teacher
#3 Largest Private Schools in Dekalb County, GA
Our Lady of the Assumption Catholic School
Diocesan school · Grades Pre-K–8
535 students
Atlanta, GA
AOverall grade535 students11 students per teacher
#4 Largest Private Schools in Dekalb County, GA
Immaculate Heart of Mary School
Diocesan school · Grades Pre-K–8
484 students
Atlanta, GA
BOverall grade484 students16 students per teacher
#5 Largest Private Schools in Dekalb County, GA
St. Martin's Episcopal School
Episcopal school · Grades Pre-K–8
472 students
Atlanta, GA
AOverall grade472 students7 students per teacher
#6 Largest Private Schools in Dekalb County, GA
St. Thomas More Catholic School
Parish school · Grades Pre-K–8
430 students
Decatur, GA
B+Overall grade430 students13 students per teacher
#7 Largest Private Schools in Dekalb County, GA
Cliff Valley School
Independent school · Grades Pre-K–8
392 students
Atlanta, GA
A+Overall grade392 students5 students per teacher
#8 Largest Private Schools in Dekalb County, GA
Torah Day School of Atlanta
Jewish day school · Grades K–8
360 students
Atlanta, GA
BOverall grade360 students10 students per teacher
#9 Largest Private Schools in Dekalb County, GA
The Waldorf School of Atlanta
Independent school · Grades Pre-K–8
192 students
Decatur, GA
A+Overall grade192 students5 students per teacher
#10 Largest Private Schools in Dekalb County, GA
Mohammed Schools of Atlanta
Islamic school · Grades Pre-K–12
180 students
Atlanta, GA
A-Overall grade180 students15 students per teacher
#11 Largest Private Schools in Dekalb County, GA
Arbor Montessori School
Montessori school · Grades Pre-K–8
158 students
Decatur, GA
B+Overall grade158 students9 students per teacher
#12 Largest Private Schools in Dekalb County, GA
The Friends School of Atlanta
Quaker (Friends) school · Grades Pre-K–8
152 students
Decatur, GA
A+Overall grade152 students4 students per teacher
#13 Largest Private Schools in Dekalb County, GA
Midtown International School
Independent school · Grades K–12
141 students
Atlanta, GA
A+Overall grade141 students5 students per teacher
#14 Largest Private Schools in Dekalb County, GA
St. Peter Claver Regional Catholic School
Diocesan school · Grades K–8
131 students
Decatur, GA
A+Overall grade131 students3 students per teacher
#15 Largest Private Schools in Dekalb County, GA
Annunciation Day School
Greek Orthodox school · Grades Pre-K–8
129 students
Atlanta, GA
B+Overall grade129 students9 students per teacher
#16 Largest Private Schools in Dekalb County, GA
Ben Franklin Academy
Independent school · Grades 9–12
100 students
Atlanta, GA
BOverall grade100 students5 students per teacher
#17 Largest Private Schools in Dekalb County, GA
Decatur Adventist Jr. Academy
Seventh-day Adventist school · Grades K–8
99 students
Stone Mountain, GA
B-Overall grade99 students17 students per teacher
#18 Largest Private Schools in Dekalb County, GA
Philmore Academy for Science & Arts
Independent school · Grades Pre-K–8
95 students
Stone Mountain, GA
BOverall grade95 students8 students per teacher
#19 Largest Private Schools in Dekalb County, GA
Greenforest McCalep Christian Academy
Baptist school · Grades Pre-K–12
92 students
Decatur, GA
AOverall grade92 students6 students per teacher
#20 Largest Private Schools in Dekalb County, GA
Laurel Heights Academy (Hospital)
Independent school · Grades 3–12
88 students
Atlanta, GA
BOverall grade88 students10 students per teacher
#21 Largest Private Schools in Dekalb County, GA
Dunwoody Christian School
Christian school (nondenominational) · Grades K–8
87 students
Dunwoody, GA
B+Overall grade87 students8 students per teacher
#22 Largest Private Schools in Dekalb County, GA
Dunwoody Christian School
Christian school (nondenominational) · Grades K–8
87 students
Dunwoody, GA
BOverall grade87 students10 students per teacher
#23 Largest Private Schools in Dekalb County, GA
Shallowford Presbyterian School
Presbyterian school · Grades Pre-K–8
85 students
Atlanta, GA
AOverall grade85 students3 students per teacher
#24 Largest Private Schools in Dekalb County, GA
Montessori School at Emory
Montessori school · Grades Pre-K–8
85 students
Decatur, GA
BOverall grade85 students10 students per teacher
From official public records, updated October 2026.