As many as 50% of all children, according to the Adverse Childhood Experiences Study, come to school each day having experienced serious traumatic events, including abuse, neglect, witnessing violence, and various forms of household dysfunction. For many students, these experiences and others, such as homelessness and bullying, may cause a trauma…

Considering the broader context of school reform that is seeking education strategies that might deliver substantial impact, this article examines four questions related to the policy and practice of expanding learning time: (a) Why do educators find the standard American school calendar insufficient to meet students' educational needs, especially…