Standards. We apply them, uphold them, or fail to meet them. But how do they get made? The Social Life of Standards reveals how these political and technical tools for organizing society are developed, subverted, contested, and reassembled by local communities interacting with standards created by others. Using ethnographic approaches, contributors investigate biomedical, agricultural, and other contexts that reveal the mismatch between the inconsistent implementation of standards in the real world and the non-negotiable criteria presupposed by external forces. These cases support a reflexive process that involves local engagement at every stage in the production and application of standards.