The document discusses the importance of inclusion in education. It notes that while many governments have enacted laws promoting inclusive schools, more basic supports are needed. It argues that greater inclusion is necessary to avoid social problems from alienation, encourage hope, and reduce future costs. Specifically, it recommends paying more attention to life in classrooms, building educator capacity, using tests to help not hurt, strengthening families and communities, reducing competition, and treating students as human beings. Failure to promote inclusion could lead to problems like educational failure, inability of graduates to contribute, and increased disease. The social costs of not ensuring inclusion outweigh the costs of promoting it.