Social stratification is the grouping of people based on income, wealth, political influence, and other characteristics. Widely recognized categories such as upper, middle, and lower class reflect the presence of social stratification in all societies. Inequality refers to the inevitable disparities in people's positions in this structure. The research presented in this book ranges from studies of income and wealth disparities to analyses of the nature of the class system. This textbook reflects a hybrid approach to studying stratification. It addresses the knowledge accumulated by stratification scholars and challenges students to apply this information to their social world. The authors include a wide range of topics and provide current research to round out their discussions. Each chapter includes a list of key concepts, questions for thought, suggested exercises, and multimedia resources.