In this webinar, Dolores Acevedo-Garcia Introduce the Child Opportunity Index (COI), a measure of children's neighborhood environment, and discuss its applications to measure neighborhood social determinants of health and racial/ethnic equity. The presentation includes examples of applications of the COI for measuring and addressing health equity in health research, public health, and the health care sector and a discussion of extensions of the Child Opportunity Index such as new data on historic neighborhood redlining practices and their potential applications to health equity.