Child maltreatment is associated with detrimental developmental effects. In view of the fact that child maltreatment typically occurs within the context of a caretaking relationship, attachment theory can give us insight into the nature of difficulties experienced by survivors. Therapeutic preschool has been found effective in addressing developmental problems in abused children. This study examines the effectiveness of an attachmentbased therapeutic preschool for maltreated children. Means tests indicate that, at the time of discharge, the children being served had made significant overall developmental gains as well as significant gains in the personal-social and adaptive domains of development.