THE FUNDAMENTAL PRINCIPLE OF PEACE CORPS VOLUNTEER TRAINING--TOTAL CULTURAL IMMERSION--IS ACHIEVED THROUGH DIRECT TEACHING AND FIELD EXPERIENCE. TRAINEES LEARN LANGUAGE (THROUGH INTENSIVE AUDIOLINGUAL METHODS, BRINGING LANGUAGE LEARNING INTO EVERY ASPECT OF LIFE AT THE TRAINING SITE), CUSTOMS (THROUGH ROLE PLAYING AND CROSS CULTURAL STUDIES), AND ATTITUDES (THROUGH DISCUSSION WITH STAFF WHO HAVE LIVED IN THE COUNTRY TO BE SERVED). RETURNING VOLUNTEERS, AFTER BEING TRAINED AS DISCUSSION LEADERS, HAVE BECOME OUTSTANDING TEACHERS IN THE TRAINING PROGRAMS, STRESSING THE NEED FOR SOCIAL RESEARCH FOR EFFECTIVE COMMUNITY DEVELOPMENT. IN-HOUSE TRAINING, IN WHICH TRAINING IS ENTIRELY RUN BY THE PEACE CORPS, HAS BEEN TRIED AS AN ALTERNATIVE TO UNIVERSITY-SPONSORED TRAINING, AND ADVANCED TRAINING FOR COLLEGE JUNIORS HAS BEGUN. PEACE CORPS TRAINING METHODS HAVE IMPLICATIONS FOR TRAINING WORKERS WITH ADULTS FROM FOREIGN CULTURES (ESPECIALLY TEACHING ENGLISH AS A FOREIGN LANGUAGE), AND FROM DISADVANTAGED GROUPS, AND HAVE PROVED THAT YOUNG PEOPLE CAN BECOME SUCCESSFUL TEACHERS OF ADULTS. (DOCUMENT INCLUDES A ROLE PLAYING EXERCISE, A CASE STUDY FOR LATIN AMERICA, A PROPOSAL FOR A SCHOOL TO DEVELOP PERSONNEL FOR INTERNATIONAL SERVICE, AND NOTES.) THIS DOCUMENT IS ALSO AVAILABLE, FOR $1.50, FROM THE CENTER FOR THE STUDY OF LIBERAL EDUCATION FOR ADULTS, 138 MOUNTFORT ST., BROOKLINE, MASS. 02146. (AJ)