#1 Best Private High Schools in St. Tammany Parish, LA
Christ Episcopal School
Episcopal school · Grades Pre-K–12
99% of graduates go to four-year colleges
Covington, LA
AOverall grade595 students9 students per teacher
2026 lists
Best Private High Schools in St. Tammany Parish, LA
Private high schools in St. Tammany Parish, LA with the highest overall grades. Top 7 of 7 schools.
#2 Best Private High Schools in St. Tammany Parish, LA
St. Scholastica Academy
Diocesan school · Grades 8–12
The only all-girls school in Covington
Covington, LA
AOverall gradeAll girls538 students14 students per teacher
#3 Best Private High Schools in St. Tammany Parish, LA
St. Pauls High School
Independent Catholic school · Grades 8–12
The only all-boys school in Covington
Covington, LA
AOverall gradeAll boys865 students13 students per teacher
#4 Best Private High Schools in St. Tammany Parish, LA
Pope John Paul II Catholic High School
Diocesan school · Grades 8–12
The smallest classes of any Catholic school in Slidell
Slidell, LA
B+Overall grade357 students14 students per teacher
#5 Best Private High Schools in St. Tammany Parish, LA
Archbishop Hannan High School
Diocesan school · Grades 8–12
99% of graduates go to four-year colleges
Covington, LA
B+Overall grade694 students15 students per teacher
#6 Best Private High Schools in St. Tammany Parish, LA
Northlake Christian
Christian school (nondenominational) · Grades K–12
Growing: enrollment up 48% since 2011–12
Covington, LA
B-Overall grade922 students
#7 Best Private High Schools in St. Tammany Parish, LA
First Baptist Christian School
Baptist school · Grades 1–12
The largest Christian school in Slidell
Slidell, LA
B-Overall grade278 students15 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.