Through a partnership between the University of North Florida (UNF) and the University of Belize (UB), faculty members from UNF taught a graduate course on Assessment and Measurement at UB to train in-service teachers and principals in the area of educational leadership. Two classes totalling 71 graduate students were taught during a three-week period that included four hours of instruction four times a week. The author presents a project-based learning (PrjBL) approach to teaching assessment at the graduate level in a highly diverse, multicultural setting, in a limited amount of time, with minimal resources, and under less than ideal conditions. The author introduces PrjBL, provides a review of the literature, shares an instructional approach, and provides survey data on students' perceptions of PrjBL. Finally, he describes one student case study of the culminating PrjBL project that encompasses test-building techniques, data collection, data manipulation, reliability coefficients, and interpretation of results. (Contains 2 figures.)