This document discusses the impact of demographics on 21st century education. It defines demography as the statistical study of populations, especially focusing on characteristics like gender, age, race, religion, and socioeconomic status. It describes how demographic analysis can be used in institutions and organizations, including labor markets, to understand population shifts and adjustments. Nonprofit organizations also use demographic analysis to understand their client base. The conclusion states that demographic analysis provides reliable estimates for census data and is used to estimate workforce sizes and flows.