#1 Best Private High 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 High Schools in Cobb County, GA
Private high schools in Cobb County, GA with the highest overall grades. Top 7 of 7 schools.
#2 Best Private High 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
#3 Best Private High 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
#4 Best Private High 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
#5 Best Private High 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
#6 Best Private High 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
#7 Best Private High Schools in Cobb County, GA
The Cumberland School - Upper School
Christian school (nondenominational) · Grades 6–12
One of 10 Christian schools in Marietta
Marietta, GA
BOverall grade75 students10 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.