IDEA Frontier (commonly referred to as Frontier) is an independently managed charter school within the IDEA Public Schools system in the Rio Grande Valley in deep South Texas, United States. It is located in Brownsville and was founded in 2006. The school is known for its high performance in national high school rankings, mandatory Advanced Placement testing, and high graduation rates. The U.S. News & World Report named it in the top 100 American high schools for 2013–2016.