This report is designed to assist school administrators and school boards to prepare for negotiating issues relating to class size. It includes a brief summary of the research on class size, adapted from ERS's report Class Size: A Summary of Research. Viewpoints of both school management leaders and teacher organization leaders on negotiating the class size issue are presented. Summaries of 16 arbitration hearings and 31 decisions rendered by public employment relations boards and the courts are detailed. The "weighted formula" approach to managing class size is discussed. Also provided are an analysis of negotiated class size provisions contained in 450 recent teacher negotiation agreements plus sample provisions from 30 agreements. To assist administrators in keeping abreast of the latest developments in collective bargaining, a section outlining possible sources of additional information is also provided.