Attachment theory is one of the core theories proposed for child and family social work, but concerns have been raised regarding misunderstandings and misapplications. Misinformation about attachment is widespread, and texts and teaching on attachment theory often emphasize aspects of the theory that have limited value for applied practice while other elements with greater practice value are often overlooked. As an international group of social work and clinical educators, practitioners, and attachment researchers, we propose an updating of the core social work curriculum on attachment. We present eight core concepts from attachment theory and research. These concepts support thinking about children’s relational needs and behavior, caregiving characteristics, and broader contextual factors. We argue that these concepts are particularly relevant for social work with children and families and should form the basis of teaching on attachment. We also address prevalent myths about attachment, to help protect students from misinformation and simplistic accounts, and support them to challenge misuses of attachment theory. Our recommended curriculum update aims to help trainee social workers appreciate the value of attachment theory for their practice and use the theory in helpful and appropriate ways.