Many people have become impatient with school reform and school improvement efforts that fail to include school climate. The importance of a positive school climate is emerging in current research, not only as an essential component of school reform and school improvement, but also as a necessary framework for maintaining excellent schools and providing healthy and safe schools for all students. Research strongly suggests that educators and policy makers have a lot to learn about the importance of school climate for school safety and academic success. With the growing body of research regarding school climate, it is important to study the research and understand how the psychology of school climate and how the elements of school climate can be viewed from a population-based perspective, as well as understanding the impact of school climate on individual students. This review of school climate research includes hundreds of articles and research papers of different perspectives from around the world in numerous cultures. School climate is becoming a science of education and psychology that must be studied further in order to understand the dynamic nature of learning environments, to identify elements that support or threaten the learning environment, and to learn how to improve the conditions for learning in all schools.