Debate, college readiness, and economic opportunity

Link one: access leads to skills

This is the best-documented link. The Boston study found that debate participation raised English language arts test scores by 0.13 standard deviations, about two-thirds of a year of ninth-grade learning, with gains concentrated in analytical subskills. The Baltimore study found middle school debaters had higher standardized test scores and lower chronic absenteeism. These are the skills that college coursework demands: reading dense material, extracting an argument, and evaluating evidence.

Link two: skills lead to college readiness

The Chicago studies measured this directly. Debaters were more likely than comparable peers to meet ACT college-readiness benchmarks in English and reading and gained more in GPA over high school. The researchers used matching methods to account for the fact that students who choose debate may differ from those who do not, and the differences remained.

Link three: college readiness leads to higher-education outcomes

The Boston study followed students into the National Student Clearinghouse and found evidence of positive effects on high school graduation and postsecondary enrollment. Chicago debaters were more likely to graduate, with the largest differences among students at the highest risk of not finishing. Enrollment is not completion, and the studies do not follow students through a degree; that is the honest limit of the evidence on this link.

Link four: higher education leads to economic mobility

This link does not depend on debate research. Decades of labor economics show that postsecondary completion is one of the strongest predictors of adult earnings, and the Opportunity Insights work on Charlotte identifies college and career readiness as one of the determinants of mobility the city tracks. A student who enrolls in and completes a degree has changed the odds for the rest of their working life.

What the chain does not claim

It does not claim that every debater goes to college, that debate alone causes mobility, or that the effects measured in Boston or Chicago will appear at the same size in Charlotte. It claims that debate is one of the few school activities with evidence at each step, that the students who benefit most are the ones who start furthest behind, and that the activity is cheap relative to almost any other intervention with comparable evidence. The Boston authors made the last point themselves: debate programs are cost-effective relative to other high-profile interventions and therefore have real potential to scale.

That is why CUDL exists, and why we spend our supporters' money on coaches, tournament entries, and bus rides rather than anything else. The research, with citations, is on our impact page.