Fontainebleau High School is a public high school in unincorporated St. Tammany Parish, Louisiana, United States, north of Mandeville. The school is a part of the St. Tammany Parish Public Schools. The school serves Abita Springs and a section of Mandeville. It was founded in August, 1994 with 778 ninth and tenth grade students. The school had an estimated enrollment of approximately 2,300 students during the 2008-2009 school year, but was downsized with the opening of the new Lakeshore High School, which was opened with the 2009-2010 school year. Current enrollment for Fontainebleau is estimated to be about 1650.