Sun Valley High School is a public high school in Union County, North Carolina. Sun Valley is part of Union County Public Schools. It is located between Monroe and Indian Trail.HistorySun Valley was founded in 1961. The current principal is Dr. Shaun Poole.For decades, it was the only high school in western Union County. Three new high schools have been built in the area since the 1990s, partially relieving the crowded conditions that had plagued the school for many years.The student body presently resides in the municipalities of Indian Trail, Wesley Chapel, Monroe and Weddington- largely as a result of a massive redistricting effort on behalf of the Union County Public School board, much to the disapproval of the majority of Union County residents.Sun Valley High School still struggles with overcrowded, outdated facilities and is due to be the recipient of a 26 million bond referendum in 2016.