Book excerpt: The theories of social reproduction are highly complicated, and they have various quantification problems. By introducing the Triptych Model of Social Class Reproduction, which can be applied in different cultures and societies, this book resolves this issue by providing a rich and easy-to-grasp understanding of these theories. It discusses various issues with the Marxian conception of social reproduction, class measurement challenges, and advanced equations of social practice. Further, it substantiates the practice of social reproduction in quantitative research in the domains of language, family, ethnicity, and indigenous culture.