Frisco ISD | 16,835 followers on LinkedIn. Our mission is to know every student by name and need. | Frisco Independent School District remains one of the fastest growing public school districts in the state and nation. Within the 75 square miles of our District, FISD schools serve residents of Collin and Denton Counties, including residents of Frisco and portions of McKinney, Plano and Little Elm, Texas. At the heart of our success is a student-opportunities model that has guided the District through three decades of explosive enrollment growth.