Child custody and legal guardianship are legal terms which are used to describe the legal and practical relationship between a parent or guardian and a child in that person's care, such as the right to make decisions on behalf of a child and the duty to care for and support the child. Legal custody involves the division of rights between the parents to make important life decisions relating to their minor children.Such decisions may include choice of a child's school, choice of physician, whether the child should attend therapy and with what therapist, and decisions relating to medical and orthodontic treatment.