DeWitt School District is a school district based in the town of DeWitt, Arkansas, United States. The DeWitt School District is geographically the state's largest school district with 872.29 square miles (2,259.2 km2) of land and 46.18 square miles (119.6 km2) of water, encompassing portions of Arkansas, Jefferson, and Desha counties. It operates four schools, including DeWitt High School, DeWitt Middle School, DeWitt Elementary School and Gillett Elementary School.