This research explores the application of Viewpoints and Composition training with a cast of high school students to measure changes in the social cognitive development (SCD) of individuals and the collective group. The research centers on the writing of Michael F. Mascolo and Deborah Margolis, which takes a coactive approach to the relationship between one's social cognitive development and how it is manifested in his or her actions within a social group. Using this framework, the researcher assesses the personality types within the cast and analyzes how utilizing Viewpoints training creates shifts within these personalities. The researcher approaches this study from both a theoretical standpoint as a student during a two-week intensive training course for adults with SITI Company, and a practical standpoint in the direction of a fully mounted production with high school actors. The objective of the research is to propose a method to implement advanced Viewpoints training within a high school ensemble in order to cultivate ensemble and ultimately aid the social cognitive development of the individual actors.