The focus of this study is a specific SDP programme, entitled Sports Visitors, executed in partnership between George Mason University and the U.S. Department of State. The purpose of this programme evaluation was to examine a subset of Latin American and Caribbean groups to ascertain the immediate, short-term impact of an intervention programme on the attitudes of participants relative to programme objectives. Nine groups comprised of 150 sport visitors participated in this investigation over a five year period. After the data were cleaned, 143 valid responses remained for analysis. The findings are based upon descriptive and effect size outcomes of quantitative survey data supplemented by qualitative comments provided by participants. The overall total mean for all seven items combined yields a very large effect size of 1.43. The results indicate that a) positive change occurred among LAC participants across all objectives measured, and b) changes were consistently reflected across each type of LAC participant group based upon gender, role, and gender with role.