Mandeville High School is a public high school located in Mandeville, Louisiana, United States, a suburban city located thirty miles north of New Orleans.

It is part of the St. Tammany Parish Public Schools system.

Approximately 70% of its graduates continue their education: 68% going to four-year colleges or universities, and 2% going to either two-year colleges or other post secondary institutions.

There are more than 120 members on the professional staff, 58 of whom have a master's degree or higher.

[4] Mandeville High athletics competes in the LHSAA.