#1 Largest Private Schools in Decatur, GA
St. Thomas More Catholic School
Parish school · Grades Pre-K–8
430 students
Decatur, GA
B+Overall grade430 students13 students per teacher
2026 lists
Largest Private Schools in Decatur, GA
The private schools in Decatur, GA with the most students. Top 14 of 14 schools.
#2 Largest Private Schools in Decatur, GA
The Waldorf School of Atlanta
Independent school · Grades Pre-K–8
192 students
Decatur, GA
A+Overall grade192 students5 students per teacher
#3 Largest Private Schools in Decatur, GA
Arbor Montessori School
Montessori school · Grades Pre-K–8
158 students
Decatur, GA
B+Overall grade158 students9 students per teacher
#4 Largest Private Schools in Decatur, GA
The Friends School of Atlanta
Quaker (Friends) school · Grades Pre-K–8
152 students
Decatur, GA
A+Overall grade152 students4 students per teacher
#5 Largest Private Schools in Decatur, GA
St. Peter Claver Regional Catholic School
Diocesan school · Grades K–8
131 students
Decatur, GA
A+Overall grade131 students3 students per teacher
#6 Largest Private Schools in Decatur, GA
Greenforest McCalep Christian Academy
Baptist school · Grades Pre-K–12
92 students
Decatur, GA
AOverall grade92 students6 students per teacher
#7 Largest Private Schools in Decatur, GA
Montessori School at Emory
Montessori school · Grades Pre-K–8
85 students
Decatur, GA
BOverall grade85 students10 students per teacher
#8 Largest Private Schools in Decatur, GA
Academe of the Oaks
Independent school · Grades 9–12
80 students
Decatur, GA
B+Overall grade80 students10 students per teacher
#9 Largest Private Schools in Decatur, GA
Hess Academy
Independent school · Grades Pre-K–8
79 students
Decatur, GA
A+Overall grade79 students4 students per teacher
#10 Largest Private Schools in Decatur, GA
Cambridge Academy
Independent school · Grades Pre-K–5
45 students
Decatur, GA
B+Overall grade45 students9 students per teacher
#11 Largest Private Schools in Decatur, GA
Global Village Project
Independent school · Grades 6–8
39 students
Decatur, GA
AOverall gradeAll girls39 students5 students per teacher
#12 Largest Private Schools in Decatur, GA
Kilombo Academic & Cult. Inst.
Independent school · Grades Pre-K–8
32 students
Decatur, GA
A-Overall grade32 students6 students per teacher
#13 Largest Private Schools in Decatur, GA
The Loom School
Special education school · Grades K–8
27 students
Decatur, GA
B+Overall grade27 students6 students per teacher
#14 Largest Private Schools in Decatur, GA
The Hirsch Academy
Special education school · Grades K–8
23 students
Decatur, GA
AOverall grade23 students2 students per teacher
From official public records, updated October 2026.