For the 2026 school year, there are 9 public high schools serving 12,043 students in St. Tammany Parish, LA.
The top-ranked public high schools in St. Tammany Parish, LA are Mandeville High School, Northshore High School and Lakeshore High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
St. Tammany Parish, LA public high schools have an average math proficiency score of 46% (versus the Louisiana public high school average of 37%), and reading proficiency score of 50% (versus the 44% statewide average). High schools in St. Tammany Parish have an average ranking of 9/10, which is in the top 20% of Louisiana public high schools.
St. Tammany Parish, LA public high school have a Graduation Rate of 81%, which is less than the Louisiana average of 84%.
The school with highest graduation rate is Mandeville High School, with 91% graduation rate. Read more about public school graduation rate statistics in Louisiana or national school graduation rate statistics.
Minority enrollment is 38% of the student body (majority Black), which is less than the Louisiana public high school average of 56% (majority Black).
Best Public High Schools in St. Tammany Parish (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Mandeville High School
(Math: 69% | Reading: 62%)
Rank:
Rank:
10/
Top 10%10
#1 Skipper Drive
Mandeville, LA 70471
(985) 626-5225
Mandeville, LA 70471
(985) 626-5225
Gr: 9-12 | 2,006 students Student-teacher ratio: 14:1 Minority enrollment: 20%
Rank: #22.
Northshore High School
(Math: 57% | Reading: 64%)
Rank:
Rank:
10/
Top 10%10
100 Panther Drive
Slidell, LA 70461
(985) 649-6400
Slidell, LA 70461
(985) 649-6400
Gr: 9-12 | 1,518 student Student-teacher ratio: 15:1 Minority enrollment: 40%
Rank: #33.
Lakeshore High School
(Math: 65% | Reading: 54%)
Rank:
Rank:
9/
Top 20%10
26301 Highway 1088
Mandeville, LA 70488
(985) 624-5046
Mandeville, LA 70488
(985) 624-5046
Gr: 9-12 | 835 students Student-teacher ratio: 13:1 Minority enrollment: 31%
Rank: #44.
Fontainebleau High School
(Math: 48% | Reading: 55%)
Rank:
Rank:
9/
Top 20%10
100 Bulldog Drive
Mandeville, LA 70471
(985) 892-7112
Mandeville, LA 70471
(985) 892-7112
Gr: 9-12 | 1,451 student Student-teacher ratio: 13:1 Minority enrollment: 27%
Rank: #55.
Slidell High School
(Math: 39% | Reading: 42%)
Rank:
Rank:
7/
Top 50%10
#1 Tiger Drive
Slidell, LA 70458
(985) 643-2992
Slidell, LA 70458
(985) 643-2992
Gr: 9-12 | 1,654 student Student-teacher ratio: 14:1 Minority enrollment: 55%
Rank: #66.
Covington High School
(Math: 35% | Reading: 41%)
Rank:
Rank:
6/
Top 50%10
73030 Lion Drive
Covington, LA 70433
(985) 892-3422
Covington, LA 70433
(985) 892-3422
Gr: 9-12 | 1,600 student Student-teacher ratio: 15:1 Minority enrollment: 32%
Rank: #77.
Pearl River High School
(Math: 27% | Reading: 37%)
Rank:
Rank:
5/
Bottom 50%10
39110 Rebel Lane
Pearl River, LA 70452
(985) 863-2591
Pearl River, LA 70452
(985) 863-2591
Gr: 9-12 | 781 students Student-teacher ratio: 13:1 Minority enrollment: 27%
Rank: #88.
Salmen High School
(Math: 18% | Reading: 34%)
Rank:
Rank:
4/
Bottom 50%10
300 Spartan Drive
Slidell, LA 70458
(985) 643-7359
Slidell, LA 70458
(985) 643-7359
Gr: 9-12 | 1,091 student Student-teacher ratio: 15:1 Minority enrollment: 85%
Rank: #99.
Florida Parishes Juvenile Detention Center
Alternative School
(Math: ≤20% | Reading: ≤20%)
Rank:
Rank:
3/
Bottom 50%10
28528 Highway 190
Covington, LA 70433
(985) 893-6292
Covington, LA 70433
(985) 893-6292
Gr: 3-12 | 72 students Student-teacher ratio: 10:1 Minority enrollment: 63%
Frequently Asked Questions
What are the top-ranked public high schools in St. Tammany Parish, LA?
The top-ranked public high schools in St. Tammany Parish, LA include Mandeville High School, Northshore High School and Lakeshore High School.
How many public high schools are located in St. Tammany Parish?
9 public high schools are located in St. Tammany Parish.
What is the racial composition of students in St. Tammany Parish?
St. Tammany Parish public high schools minority enrollment is 38% of the student body (majority Black), which is less than the Louisiana public high schools average of 56% (majority Black).
Which public high schools in St. Tammany Parish are often viewed compared to one another?
Popular comparisons of public high schools in St. Tammany Parish include: Mandeville High School vs. Fontainebleau High School, Pearl River High School vs. Northshore High School, Covington High School vs. Fontainebleau High School
Recent Articles
AI Report Cards: Should Schools Evaluate AI Use?
Explore whether schools should assess student AI use, the benefits, risks, and what responsible AI report cards could look like in 2026.
The Parent’s Guide to School Cell Phone Bans in 2026
Learn how school cell phone bans work in 2026, why districts are adopting them, and what parents should expect.
Parental Involvement in Public Schools: 2026 Update
Explore the latest 2026 trends, research, and strategies shaping parental involvement in public schools and student success.