Keller Independent School District is a school district based in Keller, Texas, United States. Keller ISD covers 51 square miles in northeast Tarrant County in cities such as Keller, Fort Worth, Haltom City, Watauga, North Richland Hills, Hurst, Colleyville, Southlake, and Westlake, serving more than 33,000 students across 42 campuses. From Wikipedia