This document outlines desirable components and characteristics for developing medical school cases for small group learning. It recommends that cases have clear, measurable learning objectives; content matched to the objectives; effective inserted questions to stimulate discussion; appropriate context and level; authentic problem scenarios; clear organization; appropriate length; high quality exhibits; up-to-date medical information; opportunities to use medical informatics; connections to other course content; and facilitator guides with discussion points. It also stresses obtaining feedback to improve cases.