Jarrell ISD is located in northern Williamson County. The mascot is The Cougars. It has four campuses: Jarrell High School, Jarrell Middle School, Jarrell Intermediate School and Jarrell Elementary. The district is home to more than 1,930 students and is expected to average 9.4 percent growth for the next 10 years. JISD is led by Superintendent Dr. William Chapman.