People with mild intellectual disabilities have a tendency to get in financial trouble, since it is hard for others to recognize their conditions and they give an impression of having a higher ability than they actually possess when they converse with others. The authors examined and performed a support program for students at a special needs education school and people with mild intellectual disabilities who work in companies to learn family financial management skills. By interviewing teachers, family members and supporters, it was reaffirmed that any future research in consumer education needs not only to find a way to foster a self-defense capability to prevent consumer problems, but also to obtain the skills to live with the support system.