Sustainable tourism has the potential of contributing to local development while protecting the natural environment and preserving cultural heritage. Implementation of this form of tourism requires human resources that can assume effective leadership in sustainable development. The purpose of the international student program, described in this paper, was to develop and implement an educational methodology to fulfill this need. The study, which was developed and applied by two universities, took place in August 2013, in the study setting of Kastamonu, Turkey. The effectiveness of the program was measured by pre-and post-surveys using the Global Citizenship Scale developed by Morais and Ogden. The findings document a change in intercultural communication, global knowledge and political voice dimensions of the scale.