#1 Best Catholic Schools in Dekalb County, GA
St. Pius X Catholic High School
Diocesan school · Grades 9–12
The smallest classes of any Catholic school in Atlanta
Atlanta, GA
A+Overall grade1,054 students10 students per teacher
2026 lists
Best Catholic Schools in Dekalb County, GA
The highest-graded schools of this kind in Dekalb County, GA. Top 6 of 6 schools.
#2 Best Catholic Schools in Dekalb County, GA
St. Peter Claver Regional Catholic School
Diocesan school · Grades K–8
Smaller classes than 90% of Catholic schools in Georgia
Decatur, GA
A+Overall grade131 students3 students per teacher
#3 Best Catholic Schools in Dekalb County, GA
Marist School
Independent Catholic school · Grades 7–12
The largest of 34 Catholic schools in Georgia
Atlanta, GA
A+Overall grade1,082 students12 students per teacher
#4 Best Catholic Schools in Dekalb County, GA
Our Lady of the Assumption Catholic School
Diocesan school · Grades Pre-K–8
Serving families in Atlanta since at least 2011
Atlanta, GA
AOverall grade535 students11 students per teacher
#5 Best Catholic Schools in Dekalb County, GA
St. Thomas More Catholic School
Parish school · Grades Pre-K–8
One of 2 Catholic schools in Decatur
Decatur, GA
B+Overall grade430 students13 students per teacher
#6 Best Catholic Schools in Dekalb County, GA
Immaculate Heart of Mary School
Diocesan school · Grades Pre-K–8
Serving families in Atlanta since at least 2011
Atlanta, GA
BOverall grade484 students16 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.