Two important characteristics of contemporary teamwork are working with colleagues from diverse cultural backgrounds and working in virtual teams. Hence, preparing students to successfully navigate through the business world must include developing these two skills. To investigate learning for both cross-cultural and virtual collaboration, we conducted a cross-cultural virtual team experiential exercise with 635 undergraduate students comprising 189 teams. The exercise was part of Organizational Behavior classes at three university campuses--two in the United States and one in Croatia. Data analysis examining skills development and efficacy demonstrated a significant increase in virtual team efficacy for all students and a significant increase in cross-cultural efficacy for students in Croatia. Qualitative results point to differences in key lessons learned between U.S. and Croatian students, such as communication skills, time management skills, and intensity of the experience. We provide a description of the exercise, lessons learned, and suggestions for future use, including adaptations to smaller class sizes.