As institutional repositories grow and thrive, many institutions are eager to quantify and benchmark their hard work and success. The proposal presented in this workshop is intended to serve as a starting point for the creation of a simple and measurable set of IR success metrics that would serve the needs of the broad community of repository managers and stakeholders. The benchmarking models being presented in this workshop come from analyzing deposit and activity data from hundreds of repositories, and are founded upon in-depth interviews with repository managers about their goals. The aim of this workshop is to create platform-agnostic success metrics and create a shared framework for success for the IR community. What will you do differently once you have self-assessment tools that tell you how your IR program is really performing? Workshop attendees are encouraged to bring deposit and usage data from their repositories and a laptop or mobile device, though neither is required.