Whereas economists do not traditionally address social harmony, and sociologists or political scientists do not usually tackle economic development, the interaction of social harmony and economic development has recently become an object of intense concern. In their aim to foster evolved rather than uprooted cultural values, the authors of this research note suggest an educational approach to promote the concept and the implementation of what they refer to as "authentic development." They propose interdisciplinary courses that include notions of history, sociology and economy. Their methodology is based on two main resources: (1) a textbook providing a broad historical survey tracing the development of 28 nations in the Americas; and (2) analytical parameters related to the extent of social interaction and income generation. Students carry out digital and group research and elaborate the conditions that generate social harmony, economic well-being and a better balance between them. The authors have already piloted their educational approach in four secondary schools in Antigua, Guatemala with 50 students aged 17-19. Most of them are now enrolled at local universities, but the impact of this course on their performance will only emerge over time.