Purpose: The purpose of this article was to examine the geographical spread of teaching personal and social responsibility (TPSR), the extensive range of new populations and cultures that TPSR has been implemented with, and to consider the resulting challenges of this growth. Method: Information was gathered from published articles, dissertations, professional articles, and program descriptions and systematically analyzed for program fidelity. Results: A total of 31 countries were identified as having some level of TPSR presence, and there was a great deal of diversity in how, where, and to whom the programs are implemented. Discussion: The proliferation of TPSR will continue, and as this occurs, there will be increasing challenges in maintaining fidelity to the model. Conclusion: To meet this challenge, ongoing research, quality professional development, and the growth of communities of TPSR practice will be crucial.