Developments in court interpretation are outlined to illustrate the argument that more, and more qualified, interpreters are need to assist in both the federal and state courts. This discussion focuses principally on the criminal justice system, and includes federal statutory developments, especially concerning the implementation and impact of the Court Interpreters Act of 1978; constitutional bases for the appointment of a court interpreter, including federal developments in case law, state cases referring to the Federal Constitution, and state cases referring to state constitutions; a case study of the recent efforts of the State of New Jersey to improve its court interpretation services; the rationale and needed design for court interpretation training; and the current status of court interpreter training in the United States. Educational and administrative needs in the rapidly expanding field are examined. (MSE)