This guide, intended for participants in the third course of the National School Resource Network Core Curriculum, contains an activity/content summary for each module of the course, worksheets, and background materials. The purpose of the course is to introduce a conceptual overview and definition of "school climate" with the goal of effecting positive change. The focus is on ways of improving school climate without administrative or community action. The course first defines school climate, and then discusses ways to assess and improve it. These include formal and informal assessment, improvement of interpersonal relations, stress reduction and management, student involvement in change, and law-related education as a relevant curriculum approach. (Author/MLF)