Figure 2. Effects of Boston Debate League on reading achievement
Source: Schueler, Beth E., and Katherine E. Larned. "Interscholastic Policy Debate Promotes Critical Thinking and College-Going: Evidence From Boston Public Schools." Educational Evaluation and Policy Analysis (2023): 01623737231200234.
Note: Plot shows point estimates in dark blue and 95% confidence intervals in light blue. X-axis units are standard deviations. Q1 refers to Quartile 1 in student test score distribution .