Welcome to our TIG website! The Cluster, Multi-Site, and Multi-Level Evaluation (CMME) TIG is focused on supporting members with sessions, resources, and information relevant to the implementation of these frameworks and methodologies in evaluation. CMME encompasses methodologies and tools for designs that address single interventions implemented at multiple sites, multiple interventions implemented at different sites with shared goals, and the qualitative and statistical treatments of data for these designs, including meta-analyses, statistical treatment of nested data, and data reduction of qualitative data.