Research suggests that children with complex trauma histories may have a severely compromised ability to benefit from education. Trauma may be experienced directly or witnessed and may be physical, such as physical assault or sexual abuse, or emotional, such as verbal abuse. Traumatized children may struggle with self-regulation (i.e., knowing how to calm down) and may lack impulse control or the ability to think through consequences before acting. As a result, complexly-traumatized children may behave in ways that appear unpredictable, oppositional, volatile, and extreme. In a learning environment, these behaviors not only affect a child’s ability to focus on learning opportunities but adversely affect - and often disrupt - the learning opportunities of other children in the classroom. By virtue of serving children of families who live at or below federal poverty guidelines, Head Start has a higher proportion of children with poverty-related physical, social, emotional, and intellectual needs. Recent studies on the effects of poverty, including the Adverse Childhood Experiences (ACEs) study, reinforce that potentially traumatic events can have negative, lasting effects on health and well-being. Potentially traumatic experiences are common among U.S. children, with more than one in four having been exposed to economic hardship in the first five years of life. These findings have important implications for children’s health and well-being, including the need for increased attention to the early detection and treatment of children affected by trauma, as well as to the conditions in families and communities that contribute to adverse development. Everyone can recover from traumatic stress. Even in developmentally-appropriate settings for this age group, factors in group settings upset complexly traumatized children because the setting requires a high degree of self-regulation that they cannot achieve or sustain. It is often the first indication that a child’s complex trauma behaviors can become a barrier to their ability to benefit from the type of group learning experience they will be engaged in for the next 12-14 years of their life.