Tootling is a classwide, peer-mediated intervention created to encourage desired classroom behaviors and enhance students' awareness of classmates' incidental prosocial behaviors (Cashwell et al., 2001; Skinner et al., 2000). This intervention was named Tootling by combining the word "tattling," which is a type of peer reporting, and the phrase "toot your own horn," which is a way of reporting desired behaviors (Skinner et al., 2002). When tattling, peers report classmates' incidental antisocial or undesired behaviors. Tootling interventions encourage students to tootle, or report, classmates' incidental prosocial behaviors. Developing, installing, and maintaining Tootling interventions requires working through several steps. Each step is necessary but can be modified. This article describes each of the following seven steps and how the interventions can be modified: (1) Select the prosocial behaviors; (2) Teach students how to engage in the prosocial behaviors; (3) Select group rewards; (4) Establish group criteria; (5) Develop and train in peer reporting procedures; (6) Describe the procedures for obtaining group rewards; and (7) Begin Tootling.