Developmental Disabilities Council “The District of Columbia State Developmental Disabilities Council (DDC) believes that all people are created equal and are entitled to have their legal, civil and human rights respected and protected.  The DDC is committed to the principles of value, independence and dignity for all individuals with developmental disabilities and will strive to eliminate barriers which may hinder the achievement of these personal outcomes”. For information on the Developmental Disabilities Council, please call (202) 671-4490. For information on developmental disabilities, explore the following resources: Parents Advocacy Coalition for Education Rights (PACER Center) National Association of Councils on Developmental Disabilities (NACDD) What are the main categories of disabilities? What advocacy agencies assist persons with disabilities?