Lake Elsinore Unified School District is a public school district located in Lake Elsinore, California, USA. It was formed on July 1, 1989, when the Elsinore Union High School District merged with the Lake Elsinore School District (elementary). The Lake Elsinore Unified School District is the 8th largest school district (by student population) in Riverside County and encompasses an area of 131.78 square miles.