As mandated in the 1973 Amendments to the Safe Streets Act, the National Manpower Survey (NMS) of the Criminal Justice System was conducted. Focus of the survey was on the existing and future personnel needs of the nation in the field of law enforcement and criminal justice and on the adequacy of federal, state, and local programs to meet such needs. Data were collected via surveys of 8,000 executives of state and local criminal justice agencies, 1,600 state trial and appellate courts, and 250 law enforcement academies; analysis of a 1975 Census survey of 50,000 state and local criminal justice employees; and field visits to 250 agencies or educational institutions. The findings include the following: there is a need for selective increases of personnel in most categories of criminal justice agencies, other than juvenile corrections institutions; the outlook is for lower levels of recruitment in most criminal justice occupations in the next five years than in the early 1970's; the need for mass higher education for all line law enforcement or correctional officers recently supported by the Law Enforcement Education Program (LEEP) was not confirmed; and there is a need for a more selective program of support for continuing education to meet career development needs at the supervisory and managerial levels. (EM)