#1 Best Catholic 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
2026 lists
Best Catholic Schools in St. Tammany Parish, LA
The highest-graded schools of this kind in St. Tammany Parish, LA. Top 8 of 8 schools.
#2 Best Catholic 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
#3 Best Catholic 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
#4 Best Catholic 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
#5 Best Catholic Schools in St. Tammany Parish, LA
Our Lady of Lourdes Elementary School
Diocesan school · Grades Pre-K–7
Serving families in Slidell since at least 2011
Slidell, LA
BOverall grade301 students15 students per teacher
#6 Best Catholic Schools in St. Tammany Parish, LA
Mary Queen of Peace Catholic School
Diocesan school · Grades Pre-K–7
Serving families in Mandeville since at least 2011
Mandeville, LA
B-Overall grade350 students19 students per teacher
#7 Best Catholic Schools in St. Tammany Parish, LA
Lake Castle Slidell Private School
Independent Catholic school · Grades Pre-K–8
One of 3 Catholic schools in Slidell
Slidell, LA
B-Overall grade336 students16 students per teacher
#8 Best Catholic Schools in St. Tammany Parish, LA
St. Peter Catholic School
Diocesan school · Grades Pre-K–7
Serving families in Covington since at least 2011
Covington, LA
B-Overall grade706 students17 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.