The Indiana Schools Speech and Debate Association began in 1928 as the Indiana State Debating League. In 1943 the name was changed to the Indiana High School Forensics Association when Speech events were added to the season of competitions. The first State Finals tournament was held in 1951 at New Castle HS.
In 2021 member schools voted to change the name of the organization to the Indiana Schools Speech & Debate Association. Membership is open to any Middle or High School in the state of Indiana.