Lake Harbor Middle School

Lake Harbor Middle School in Mandeville, LA, serves 582 students in grades 4 through 6 and is part of the highly-rated St. Tammany Parish school district, which holds a 4-star rating and ranks in the 84th percentile statewide.

Lake Harbor is an academic powerhouse, with proficiency rates that far exceed both district and state averages. In the 2025-2026 school year, 87% of students were proficient in Math (compared to 71% district-wide and 62% statewide), 90% in English Language Arts (vs. 79% district and 70% statewide), and 79% in Social Studies (vs. 66% district and 55% statewide). This performance is on par with other top-tier Mandeville schools like Tchefuncte Middle School (90% Math, 89% ELA) and Gayle Sloan Middle School (89% Math, 89% ELA), and significantly outperforms nearby schools such as Pine View Middle School (60% Math, 69% ELA) and Bayou Lacombe Middle (63% Math). The school also boasts the lowest chronic absenteeism rate among comparable middle schools in the area at just 10.6%, which is less than half the district average of 21.2% and a stark contrast to Pine View Middle School (27.7%) and William Pitcher Junior High (25.1%).

Lake Harbor’s excellence is remarkably consistent year-over-year, with Math proficiency staying between 86% and 87% and ELA between 88% and 90% over the last four years. The school is part of a cluster of high-performing middle schools in Mandeville, including Tchefuncte Middle School and Gayle Sloan Middle School, which all feed into top-tier junior highs like Mandeville Junior High School and Fontainebleau Junior High School. While Social Studies scores are slightly lower than Math and ELA, they remain far above state and district averages, suggesting a common curriculum challenge even among the best schools. With a low free/reduced lunch rate of 28.35% and a favorable student-teacher ratio of 13.3:1, Lake Harbor operates in a context of strong instructional support and community engagement.