This narrative report of a 1967 summer institute, designed to explore one of the ways of transmitting to future leaders an awareness, understanding, and tolerance for cultural differences in peoples from other nations, describes the relative effectiveness of certain methods, techniques, and procedures used in teaching experimental groups of high school students intensive Spanish. Analyses of the rationale, objectives, procedures, professional personnel qualifications, and program design and costs involved in this in-depth pursuit of the Spanish language and culture are included. In the concluding portion, a summary of recommendations, is followed by extensive budgetary considerations, activity schedules, and outlines of culture topics related to Spain and Argentina. This research was funded under Title III of the Elementary and Secondary School Education Act. (AF)