#1 Best Private Schools in Cobb County, GA
The Walker School
Independent school · Grades Pre-K–12
The largest independent school in Marietta
Marietta, GA
A+Overall grade902 students8 students per teacher
2026 lists
Best Private Schools in Cobb County, GA
Private schools in Cobb County, GA with the highest overall grades. Top 27 of 27 schools.
#2 Best Private Schools in Cobb County, GA
St. Benedicts Episcopal School
Episcopal school · Grades Pre-K–8
The largest Christian school in Smyrna
Smyrna, GA
A+Overall grade440 students5 students per teacher
#3 Best Private Schools in Cobb County, GA
St. Benedict's Episcopal School
Episcopal school · Grades Pre-K–8
The smallest classes of any Christian school in Smyrna
Smyrna, GA
A+Overall grade436 students3 students per teacher
#4 Best Private Schools in Cobb County, GA
Faith Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Smaller classes than 69% of Christian schools in Georgia
Marietta, GA
A+Overall grade63 students6 students per teacher
#5 Best Private Schools in Cobb County, GA
Mt. Bethel Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
100% of graduates go to four-year colleges
Marietta, GA
A+Overall grade659 students7 students per teacher
#6 Best Private Schools in Cobb County, GA
Covenant Christian School
Christian school (nondenominational) · Grades Pre-K–8
Smaller classes than 79% of Christian schools in Georgia
Smyrna, GA
A+Overall grade65 students5 students per teacher
#7 Best Private Schools in Cobb County, GA
St. Joseph Catholic School
Diocesan school · Grades Pre-K–8
The only Catholic school in Marietta
Marietta, GA
AOverall grade366 students12 students per teacher
#8 Best Private Schools in Cobb County, GA
Shiloh Hills Christian School
Baptist school · Grades K–12
Smaller classes than 81% of Christian schools in Georgia
Kennesaw, GA
AOverall grade69 students6 students per teacher
#9 Best Private Schools in Cobb County, GA
North Cobb Christian School
Christian school (nondenominational) · Grades Pre-K–12
99% of graduates go to four-year colleges
Kennesaw, GA
AOverall grade1,157 students8 students per teacher
#10 Best Private Schools in Cobb County, GA
The Garden School
Independent school · Grades Pre-K–6
The smallest classes of any independent school in Marietta
Marietta, GA
AOverall grade80 students6 students per teacher
#11 Best Private Schools in Cobb County, GA
East Cobb Christian School
Presbyterian school · Grades K–8
Smaller classes than 60% of Christian schools in Georgia
Marietta, GA
A-Overall grade116 students7 students per teacher
#12 Best Private Schools in Cobb County, GA
Riverstone Montessori Academy
Montessori school · Ungraded
The largest Montessori school in Marietta
Marietta, GA
A-Overall grade72 students12 students per teacher
#13 Best Private Schools in Cobb County, GA
Seeds of Excellence Christian Academy
Christian school (nondenominational) · Grades K–6
The smallest classes of any Christian school in Austell
Austell, GA
B+Overall grade85 students5 students per teacher
#14 Best Private Schools in Cobb County, GA
Eastside Christian School
Christian school (nondenominational) · Grades K–9
Smaller classes than 66% of Christian schools in Georgia
Marietta, GA
B+Overall grade281 students7 students per teacher
#15 Best Private Schools in Cobb County, GA
St. John the Baptist Hybrid School
Independent Catholic school · Grades Pre-K–12
The only Catholic school in Kennesaw
Kennesaw, GA
B+Overall grade98 students8 students per teacher
#16 Best Private Schools in Cobb County, GA
New Horizons Prep Academy
Religious school · Grades K–12
The largest of 12 private schools in Georgia
Smyrna, GA
B+Overall grade1,050 students
#17 Best Private Schools in Cobb County, GA
Praise Academy
Christian school (nondenominational) · Grades Pre-K–12
One school from pre-K through 12th grade
Powder Springs, GA
B+Overall grade267 students8 students per teacher
#18 Best Private Schools in Cobb County, GA
Montessori School of Woodstock
Montessori school · Ungraded
One of the most diverse private schools in Georgia
Marietta, GA
B+Overall grade70 students18 students per teacher
#19 Best Private Schools in Cobb County, GA
Grace Christian Academy
Baptist school · Grades Pre-K–12
Serving families in Hiram since at least 2011
Hiram, GA
B+Overall grade164 students10 students per teacher
#20 Best Private Schools in Cobb County, GA
Carman Adventist School
Seventh-day Adventist school · Grades Pre-K–8
One of the most diverse private schools in Georgia
Marietta, GA
B+Overall grade119 students15 students per teacher
#21 Best Private Schools in Cobb County, GA
The Stonehaven School
Christian school (nondenominational) · Grades K–12
Growing: enrollment up 223% since 2011–12
Marietta, GA
BOverall grade300 students11 students per teacher
#22 Best Private Schools in Cobb County, GA
Dominion Christian High School
Christian school (nondenominational) · Grades 6–12
One of 10 Christian schools in Marietta
Marietta, GA
BOverall grade258 students12 students per teacher
#23 Best Private Schools in Cobb County, GA
Midway Covenant Christian School
Christian school (nondenominational) · Grades Pre-K–8
One of 2 Christian schools in Powder Springs
Powder Springs, GA
BOverall grade247 students9 students per teacher
#24 Best Private Schools in Cobb County, GA
Cornerstone Preparatory Academy
Christian school (nondenominational) · Grades K–12
The only Christian school in Acworth
Acworth, GA
BOverall grade422 students22 students per teacher
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.