This study adds to the limited literature base on extracurricular debate by using doubly robust inverse probability treatment weighting to estimate the average treatment effect for the treated of preadolescent debate participation on a variety of academic and engagement outcomes among a 10-year longitudinal sample of Baltimore City Public School System students. The effect of preadolescent Baltimore Urban Debate League participation for debaters was associated with increases in standardized test scores, a decreased likelihood of chronic absenteeism, and an increased likelihood of attending a selective entrance criteria high school. Although there is a mounting body of research that suggests participation in debate is associated with increases in positive outcomes for high school students, this research constitutes the first quantitative study to examine these relationships among elementary and middle school students. Policy implications for educational interventions that seek to attract low-income students of color in urban areas and influence their trajectories at earlier stages of student development are discussed.