Mandeville High School
Mandeville, LA · High School · Grades 9-12
Mandeville High School is a high school in Mandeville, LA with 2,259 students enrolled and a 69% proficiency rate. Part of St. Tammany Parish. NCES data from the U.S. Department of Education.
Mandeville High School is a high school in Mandeville, LA that enrolls 2,259 students in grades 9-12, putting it among the larger public campuses in the St. Tammany Parish school district. That headcount is above the 719-student average for schools in the district.
EDFacts assessment data puts 69% of students at or above grade level in combined math and reading, a little above the national midpoint where roughly half of tested students clear the bar. That is 19 points above the 50% average for the St. Tammany Parish school district. Against the 44% Louisiana statewide average, the school sits 26 points higher.
Over the last three reported years the district proficiency rate this school inherits has risen by about 34 points. As a high school, it reports a 77% adjusted-cohort graduation rate, the share of first-time ninth-graders who earn a regular diploma within four years.
The student-teacher ratio is 21.5 to 1, above the U.S. average of roughly 16 to 1. A relatively low 22% of students qualify for free or reduced-price lunch.
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About This School
Mandeville High School is a high school located in Mandeville, Louisiana. The school serves 2,259 students in grades 9-12. The student-to-teacher ratio is 21.5:1.
According to EDFacts assessment data, 69% of students meet grade-level proficiency standards in combined math and reading. The school reports a 77% graduation rate.
22% of students qualify for free or reduced-price lunch.
Mandeville High School is part of the St. Tammany Parish in Louisiana.
How This School Compares
Mandeville High School has 2,259 students enrolled, making it larger than the average school in St. Tammany Parish (719 students). Its 69% proficiency rate is 19 percentage points above the district average of 50%. Compared to the Louisiana state average of 44%, the school performs 26 points higher. The 21.5:1 student-teacher ratio is above the national average of 16:1.
Frequently Asked Questions
Mandeville High School has 2,259 students enrolled in grades 9-12. The student-to-teacher ratio is 21.5:1.
According to EDFacts data, 69% of students at Mandeville High School meet grade-level proficiency standards in combined math and reading assessments.
Mandeville High School has a 77% graduation rate, measuring the percentage of students who graduate within four years.
Mandeville High School is part of the St. Tammany Parish in Mandeville, Louisiana. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
Source: NCES Common Core of Data, 2026.