Decatur High School is a comprehensive public high school located in the rural, distant community of Decatur, Arkansas, United States.

In addition to Decatur, the district includes small sections of Centerton and Highfill.

[2] Decatur High School is accredited by the Arkansas Department of Education (ADE) and the assumed course of study follows the Smart Core curriculum developed by the ADE, which requires students complete at least 22 units prior to graduation.

Students complete regular coursework and exams and may take Advanced Placement (AP) courses and exam with the opportunity to receive college credit.

The Decatur Bulldogs compete in interscholastic activities within the 2A Classification—the state's second smallest classification—via the 2A Region 4 Conference (football) and 2A Region 4 West Conference (basketball), as administered by the Arkansas Activities Association.