The fourth industrial revolution has affected most economies in the world. From a social perspective, the absence of theoretical models that drive decisions has a big impact on economic development, especially in developing countries. In these models, the Decision model plays a particularly important role because it is a bridge between economics and social sustainability through education. This paper presents an illustration of the Programme for International Student Assessment (PISA -oriented decision model that links real-life situations and models of mathematical theory in high schools to provide a new way of looking at the approach of decision sciences.