The United Independent School District serves the rest of Laredo and northern Webb County. The UISD high schools are John B. Alexander High School, Lyndon B. Johnson High School Laredo Early College High School, United High School, and United South High School. UISD has three magnet schools: John B. Alexander Health Science Magnet, United Engineering Magnet, and the United South Business Magnet. There are thirty-nine schools within UISD and more are under construction or development. United ISD is one of the state's fastest growing districts, serving almost forty thousand students and covering an area the physical size of Rhode Island.