A brief examination of research on the relationships among the training of teachers, their classroom behavior, and the learning of children suggests a general framework for studying both the intermediate and ultimate effects of teacher training. The idea behind this model is that such effects are more plausibly demonstrated if the argument is broken down into several intermediate steps between training activity and child growth. Each step is claimed to affect the next, and the demonstration addresses the truth of each of these claims. This booklet is intended to help the teacher examine the effects of training efforts in ways that lead to convincing demonstration of their effects. Outlines are presented on the following topics: (1) questions and answers about demonstrating effects; (2) evidence that demonstrates effects; (3) planning the demonstration of effects; (4) judging the evidence; (5) a model for demonstrating training effects; (6) measurement issues in demonstrating effects; and (7) sources and resources on demonstrating effects. (JD)