The Design Principles Documentation (DPD) project traced the badge development practices of 29 grantees of the MacArthur Foundation/Digital Media & Learning (DML) Badges for Lifelong Learning competition. The project documented the intended practices as outlined in their DML proposals and enacted practices as implemented in their badge systems. With a K-12 focus, this case study examines three projects, AQUAPONS, PASA, and MOUSE Wins!, which were particularly rich in examples of the nuanced, but ultimately important, interactions between intended badging practices and project contexts, and which illustrated the use of badges in formal, informal, and crowd-sourced settings.