This document outlines the goals and agenda for the Bern University of Applied Sciences GLAM-Wiki Evaluation Workshop. The workshop aims to (1) provide an overview of different approaches to evaluating GLAM-Wiki cooperation, (2) discuss the strengths and shortcomings of various evaluation approaches, and (3) tackle pressing challenges. The document discusses why evaluation is important for accountability, decision-making, and organizational learning. It also presents five key questions to characterize different evaluation approaches: what is being evaluated, when the evaluation occurs, what values are being judged, who is making the judgments, and the evaluation's intended uses. The workshop agenda includes group work and discussions.