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. Mandeville High School is a coeducational, public high school enrolling approximately 2,000 students in Grades 9–12. 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. MHS was named a Blue Ribbon school during the school year of 2001–02. In addition to serving most of Mandeville, the school also serves Madisonville, and Lewisburg.

Athletics

Mandeville High athletics competes in the LHSAA.

Notable alumni