A committee of the National Academies of Sciences, Engineering, and Medicine examined evidence on the outcomes of summertime experiences for children and youth in four domains of well-being—(1) academic learning, (2) social and emotional development, (3) physical and mental health, and (4) safety. The committee looked at the effectiveness of summertime programs while also focusing on issues of equity in terms of the availability of and access to summertime programs and services. (author abstract)