The recommitment of public education to its civic roots has revived discussion on how to engage younger generations of citizens in electoral politics and civic life. This randomized trial of 1,670 high school students in 80 social studies classrooms evaluates the impact of an election-based civics program on students' civic knowledge, skills, and dispositions over the course of a semester. Analyses of these data reveal significant effects of the program on students' self-reported ability to cast an informed vote, knowledge of the voter registration process, belief that their vote matters, communication with others at school about politics, sense of civic obligation, and media use and analysis. ["Using Elections as Teachable Moments: A Randomized Evaluation of the Student Voices Civic Education Program" was written with Dana L. Mitra, Mary Beth Oliver, and S. Shyam Sundar.]