2026 lists
Private schools in St. Tammany Parish, LA with the highest overall grades. Top 13 of 13 schools.
#1 Best Private Schools in St. Tammany Parish, LA
Christian school (nondenominational) · Grades Pre-K–12
Smaller classes than 83% of Christian schools in Louisiana
Slidell, LA
#2 Best Private Schools in St. Tammany Parish, LA
Episcopal school · Grades Pre-K–12
99% of graduates go to four-year colleges
Covington, LA
#3 Best Private Schools in St. Tammany Parish, LA
Diocesan school · Grades 8–12
The only all-girls school in Covington
Covington, LA
#4 Best Private Schools in St. Tammany Parish, LA
Independent Catholic school · Grades 8–12
The only all-boys school in Covington
Covington, LA
#5 Best Private Schools in St. Tammany Parish, LA
Diocesan school · Grades 8–12
The smallest classes of any Catholic school in Slidell
Slidell, LA
#6 Best Private Schools in St. Tammany Parish, LA
Diocesan school · Grades 8–12
99% of graduates go to four-year colleges
Covington, LA
#7 Best Private Schools in St. Tammany Parish, LA
Diocesan school · Grades Pre-K–7
Serving families in Slidell since at least 2011
Slidell, LA
#8 Best Private Schools in St. Tammany Parish, LA
Independent school · Grades Pre-K–7
Small classes: about 7 students per teacher
Mandeville, LA
#9 Best Private Schools in St. Tammany Parish, LA
Christian school (nondenominational) · Grades K–12
Growing: enrollment up 48% since 2011–12
Covington, LA
#10 Best Private Schools in St. Tammany Parish, LA
Diocesan school · Grades Pre-K–7
Serving families in Mandeville since at least 2011
Mandeville, LA
#11 Best Private Schools in St. Tammany Parish, LA
Independent Catholic school · Grades Pre-K–8
One of 3 Catholic schools in Slidell
Slidell, LA
#12 Best Private Schools in St. Tammany Parish, LA
Baptist school · Grades 1–12
The largest Christian school in Slidell
Slidell, LA
#13 Best Private Schools in St. Tammany Parish, LA
Diocesan school · Grades Pre-K–7
Serving families in Covington since at least 2011
Covington, LA
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.