In team-based learning, students work in groups on outcome-based or problem-based assignments. Assessing the work produced by teams, however, presents a significant challenge, and this difficulty is especially prominent in online environments. Developing and implementing a transparent assessment process that both supports and recognizes individual and group learning can generate a powerful combination of interdependency and peer cooperation. Online assessment tools that evaluate both individual and group effort support this dynamic, fostering the reliance on community that is becoming an increasingly important feature of the online academic landscape.