Struggling with frequent off-task behavior, a teacher in a midwestern inner-city high school requested assistance in her social studies classroom. A study was designed to investigate if a combination of positive behavior supports-based interventions such as behavior-specific praise and reduced teacher reprimands might improve on-task behavior. A classroom-wide, explanatory embedded case study was carried out over three months in a high-poverty urban 7-12 high school. The intervention resulted in increased on-task behavior classwide. Implications for culturally responsive practices for students in an urban classroom setting are discussed.