Building on work by Dubinsky, Haskins, and Simmons and Grabill, this article explains how a technical communication instructor used Isocrates and informal usability testing to help guide a service-learning project involving the One Laptop Per Child XO-1 notebook. For the project, engineering students received feedback from peers and elementary school teachers to determine the feasibility of using the XO-1 with at-risk children aged 6 to 9. Despite initial positive impressions, the service-learning students discovered that the XO-1 was not suitable in this situation. This article discusses Isocratean theory and how his ideas can inform a pedagogy of civic engagement in technical communication.